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Piezoelectric patents

      

This page is updated frequently with new Piezoelectric-related patent applications.




 Piezoelectric thin film resonator and  fabricating the same patent thumbnailnew patent Piezoelectric thin film resonator and fabricating the same
A piezoelectric thin film resonator includes: a lower electrode and an upper electrode facing each other across a piezoelectric film; an insertion film inserted into the piezoelectric film, located in at least a part of an outer peripheral region in a resonance region and outside the outer peripheral region, and not located in a center region of the resonance region; a protective film on the upper electrode and the piezoelectric film; and a wiring line connecting to the lower electrode and covering an outer periphery of the protective film in an extraction region of the lower electrode, wherein in the extraction region, an outer periphery of the insertion film is further out than an outer periphery of the upper electrode and further in than an outer periphery of the piezoelectric film, and the outer periphery of the protective film is further out than the outer periphery of the insertion film.. .
Taiyo Yuden Co., Ltd.


 Acoustic generator, acoustic generation apparatus, portable terminal, and electronic apparatus patent thumbnailnew patent Acoustic generator, acoustic generation apparatus, portable terminal, and electronic apparatus
There are provided an acoustic generator, an acoustic generation apparatus, a portable terminal and an electronic apparatus, which have an improved sound quality. An acoustic generator includes a piezoelectric element having a piezoelectric body; and a vibration plate joined to the piezoelectric body via a joining material, distances between the vibration plate and the piezoelectric body being different.
Kyocera Corporation


 Driving circuit for driving a capacitive load patent thumbnailnew patent Driving circuit for driving a capacitive load
Provided is a driving circuit for driving a capacitive load which includes a modulation circuit which generates a modulation signal which is obtained by pulse-modulating a source signal, a transistor which generates an amplified modulation signal by amplifying the modulation signal, a low pass filter which generates a drive signal by smoothening the amplified modulation signal, a piezoelectric element which is displaced by receiving the drive signal, and a circuit substrate on which the transistor is mounted. The transistor includes a first electrode, a second electrode, a third electrode, and a clip which has conductivity, is electrically connected to the first electrode.
Seiko Epson Corporation


 Bulk acoustic wave resonator comprising multiple acoustic reflectors patent thumbnailnew patent Bulk acoustic wave resonator comprising multiple acoustic reflectors
A bulk acoustic wave (baw) resonator includes: a plurality of acoustic reflectors disposed in a substrate; a lower electrode disposed over the plurality of acoustic reflectors; a piezoelectric layer disposed over the lower electrode; and a plurality of upper electrodes, disposed over the piezoelectric layer. One of the plurality of upper electrodes is formed over a respective one of the plurality of acoustic reflectors.
Avago Technologies General Ip (singapore) Pte. Ltd.


 Mems resonator with high quality factor patent thumbnailnew patent Mems resonator with high quality factor
A symmetrical mems resonator is disclosed with a high quality factor. The mems resonator includes a silicon layer with a top surface and bottom surface opposite the top surface.
Murata Manufacturing Co., Ltd.


 Acoustic resonator structure having comprising a plurality of connection-side contacts patent thumbnailnew patent Acoustic resonator structure having comprising a plurality of connection-side contacts
An acoustic resonator comprises a first electrode and second electrode comprising a plurality of sides. At least one of the sides of the second electrode comprises a cantilevered portion.
Avago Technologies General Ip (singapore) Pte. Ltd.


 Piezoelectric body, vibration wave motor and electronic apparatus patent thumbnailnew patent Piezoelectric body, vibration wave motor and electronic apparatus
To improve both of the mechanical reliability and electrical reliability of an electronic apparatus including a piezoelectric body, a vibrator, and a vibration wave motor. The piezoelectric body is configured by bonding a piezoelectric element and a flexible printed circuit substrate fpc, a coverlay has an end n made up of a first outline part and a second outline part that intersect with wiring layers, the first outline part coming in contact with an electrode f1 of electrodes f, and the second outline part coming in contact with another electrode of the electrodes f.
Canon Kabushiki Kaisha


 Oscillatory wave motor patent thumbnailnew patent Oscillatory wave motor
An oscillatory wave motor includes a piezoelectric element, an elastic member that includes a projecting portion, a friction member that moves relative to the elastic member and includes a contact surface in contact with the projecting portion, and pressing unit that brings the projecting portion into contact under pressure with the contact surface in a pressing direction that is a direction of a perpendicular line of the contact surface. The projecting portion includes a spherical portion formed in a center of the projecting portion, a contact portion formed on or near a center of the spherical portion, a flat portion formed around the spherical portion, and a corner portion formed around the flat portion.
Canon Kabushiki Kaisha


 Vibration wave motor patent thumbnailnew patent Vibration wave motor
A vibration wave motor includes: a vibrator including a vibration plate and a piezoelectric element; a friction member frictionally contacting the vibrator; a pressing member generating a pressing force to bring the vibrator in frictional contact with the friction member; and a pressing force transmitting member between the vibrator and the pressing member to transmit the pressing force to the vibrator. The vibrator and the friction member move in a relative movement direction by an elliptical vibration, and the pressing force transmitting member includes: an engagement portion formed near a contact portion with the pressing member and engaged with the pressing member; first restricting portion restricting movement in the relative movement direction; and a second restricting portion.
Canon Kabushiki Kaisha


 Piezoelectric ceramic,  producing the same, piezoelectric element, multilayer piezoelectric element, liquid ejection head, liquid ejecting apparatus, ultrasonic motor, optical device, vibrating apparatus, dust-removing apparatus, imaging apparatus, and electronic device patent thumbnailnew patent Piezoelectric ceramic, producing the same, piezoelectric element, multilayer piezoelectric element, liquid ejection head, liquid ejecting apparatus, ultrasonic motor, optical device, vibrating apparatus, dust-removing apparatus, imaging apparatus, and electronic device
(naxba1-y)(nbyti1-y)o3, where 0.85≦x≦0.92, 0.85≦y≦0.92, 0.95≦x/y≦1.05.  general formula (1):. .

new patent

Ultrasonic sensor, manufacturing same and ultrasonic sensor array

An ultrasonic sensor can include a substrate, a first electrode, a sensing layer and a second electrode. The first electrode is coupled on the substrate.
Hon Hai Precision Industry Co., Ltd.

new patent

Friction drive actuator

Provided is a friction drive actuator that is resistant to contamination of, for example, extraneous matter. An ultrasonic actuator according to an aspect of the present invention drives a columnar insertion section and includes a columnar vibrating body (40), whose distal end is pressed against a side surface of the insertion section, and a piezoelectric element (44), an upper electrode (44a), and a lower electrode (44b) that are provided at one side surface of the vibrating body..
Sharp Kabushiki Kaisha

new patent

Method for producing intravascular ultrasonic transducers and structure thereof

The present invention relates to a method for producing an intravascular ultrasonic transducer and a structure for same, the method for producing a ultrasonic transducer producing a single element by: forming a piezoelectric element lapped according to a previously set thickness; depositing conductive material on the lapped surface of the piezoelectric element; forming a matched layer and a rear surface layer by casting the front and rear surfaces of the piezoelectric element to which conductive material has been deposited; lapping according to a previously set thickness; and dicing the bulk material, which is a stack of a matched layer, a piezoelectric element and a rear surface layer, along the stack direction so that the size of the element is less than the critical size for intravascular ultrasound (ivus).. .
Sogang University Research Foundation

new patent

Micro-electro-mechanical producing the same

A micro-electro-mechanical system includes a deflectable actuator plate and an abutment area. An integral piezoelectric functional layer of the deflectable actuator plate is configured across an area aps of the actuator plate.
Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

new patent

Multi-layer capacitor having upper and lower portions with different dielectric layer materials to reduce acoustic vibration

A multi-layer capacitor such as a multi-layer-ceramic-capacitor (mlcc) has upper and lower dielectric layers separating upper and lower electrode layers, where the lower dielectric layers have a lower dielectric constant than the upper dielectric layers to reduce piezoelectric effect driven capacitor reaction forces on a printed circuit board (pcb) on which the capacitor is mounted. Such an mlcc may include the upper dielectric and electrode layers in a top portion of the mlcc; and the lower dielectric and electrode layers in a bottom portion of the mlcc.
Apple Inc.

new patent

Fiber optic sensor array for electromagnetic data collection

An electromagnetic sensitive fiber optic sensor, including a cylinder portion with a hole through the center, where a surface of the cylinder portion includes a magnetostrictive material, and a fiber cable threaded through the cylinder portion and wrapped around the cylinder portion multiple times. In another embodiment, a mandrel surrounds a magnetorestrictive or piezoelectric material and the fiber cable is wrapped around the mandrel..
Deep Imaging Technologies, Inc.

new patent

Sensor capable of sensing shear force

A sensor able to detect shearing forces as well as simple pressure includes a substrate, a support secured to the substrate, and shear force sensing unit located at an exterior surface of the support facing away from the substrate. The support can be elastically deformed in proportion to the shearing force or pressure.
Hon Hai Precision Industry Co., Ltd.

new patent

Information pushing device and smart ventilation apparatus

An information pushing device includes an information emitting device and a plurality of power generation members. The information pushing device is configured to push wireless information to mobile terminal equipments.
Hon Hai Precision Industry Co., Ltd.

new patent

Blower

A piezoelectric blower includes a valve, a housing, a vibrating plate, and a piezoelectric element. The vibrating plate forms, together with the housing, a column-shaped blower chamber such that the blower chamber is interposed therebetween in a thickness direction of the vibrating plate.
Murata Manufacturing Co., Ltd.

new patent

Piezoelectrically-controlled fuel delivery system

A fuel delivery system is provided for filling a fuel tank with a prescribed volume of fuel. The delivery system includes a fuel tank, a piezoelectrically-actuated fill control valve for controlling flow of fuel into the fuel tank, and a controller for controlling the closure rate of the fill control valve to accurately control the volume of fuel provided to the fuel tank.
Parker-hannifin Corporation

new patent

Liquid discharging apparatus

A liquid discharging apparatus includes: a channel structure having nozzles aligned in a first direction and pressure chambers aligned in the first direction corresponding to the nozzles respectively; piezoelectric elements aligned in the first direction in the channel structure, corresponding to the pressure chambers respectively; a cover covering the piezoelectric elements and having first and second wall portions arranged in a second direction orthogonal to the first direction and joined to the channel structure at first and second joint regions respectively; and traces being extended to one side in the second direction from the piezoelectric elements respectively, passing through the first region, and extending up to outside of the cover. An area of the first joint region is greater than an area of the second region..
Brother Kogyo Kabushiki Kaisha

new patent

Piezoelectric device, probe, electronic apparatus, and ultrasonic imaging apparatus

A piezoelectric device includes: an elastic layer that forms an insulating surface region at least partially and has an amorphous structure or random orientation at least in the surface region; a piezoelectric body that is provided on the elastic layer, has a first surface in contact with the elastic layer and a second surface on an opposite side to the first surface, and is preferentially oriented in an orientation region corresponding to the surface region in a plan view; a first electrode provided on the second surface of the piezoelectric body; and a second electrode that is provided on the second surface of the piezoelectric body. A gap is formed between the first and second electrodes corresponding to the orientation region in the plan view..
Seiko Epson Corporation

new patent

Nozzle, substrate treating apparatus including the same, and substrate treating method

Disclosed is a nozzle for supplying a treatment liquid to a substrate, the nozzle including a body having a passage, through which the treatment liquid flows, in the interior thereof, and having a discharge hole communicated with the passage and through which the treatment liquid is discharged, and a piezoelectric element that pressurize the treatment liquid flowing through the body to discharge the treatment liquid through the discharge hole in a state of droplets, wherein an average diameter of the droplets discharged through the discharge hole is equal to or greater than 5 micrometers and is less than 15 micrometers.. .
Semes Co., Ltd.

new patent

Materials, devices and systems for piezoelectric energy harvesting and storage

Materials and systems that enable high efficiency conversion of mechanical stress to electrical energy and methods of use thereof are described herein. The materials and systems are preferably used to provide power to medical devices implanted inside or used outside of a patient's body.
The Board Of Trustees Of The University Of Illinois

new patent

Universal piezo-magneto ultrasonic systems and methods

An ultrasonic unit manufacturing system and process are based on a universal ultrasonic generator unit that operates interchangeably with either one of piezoelectric and magnetostrictive ultrasonic devices, and optionally as well as with either on-off or power level control footswitches. The ultrasonic units use a generator unit having a detector that determines whether the connected device is piezoelectric or magnetostrictive, and activates the generator for the appropriate piezoelectric or magnetostrictive operating mode.

new patent

Piezoelectric device, probe, electronic apparatus, and ultrasonic imaging apparatus

A piezoelectric device includes: a piezoelectric film having a first surface in contact with a vibrating film and a second surface on the opposite side to the first surface; first and second electrodes that are provided on the second surface of the piezoelectric film and that are disposed at positions away from each other and are short-circuited to each other at a position away from the piezoelectric film; and a third electrode that is provided between the first and second electrodes on the second surface of the piezoelectric film and is disposed at a position away from the first and second electrodes. At least parts of the contours of end portions of the first and second electrodes are defined in parallel to side portions of the third electrode..
Seiko Epson Corporation

Acousto-optic modulator

According to one embodiment, an acousto-optic modulator includes an acousto-optic medium and a piezoelectric transducer. The acousto-optic medium has a configuration of a hexahedron.
Kabushiki Kaisha Toshiba

Piezoelectric device including conductive layer, its manufacturing method and optical deflector

A piezoelectric device includes a substrate; an insulating layer provided on the substrate; a lower electrode layer provided on the insulating layer; a piezoelectric structure provided on the lower electrode layer, the piezoelectric structure including at least one conductive layer and multiple piezoelectric layers sandwiching the conductive layer, the conductive layer having the same crystal structure as that of the piezoelectric layers; and an upper electrode layer provided on the piezoelectric structure.. .
Stanley Electric Co., Ltd.

Cantilevered probes having piezoelectric layer, treated section, and resistive heater, and use for chemical detection

The invention provides a liquid cell for an atomic force microscope. The liquid cell includes a liquid cell housing with an internal cavity to contain a fluid, a plurality of conductive feedthroughs traversing the liquid cell housing between the internal cavity and a dry side of the liquid cell, a cantilevered probe coupled to the liquid cell housing, and a piezoelectric drive element disposed on the cantilevered probe.
Board Of Regents Of The Nevada System Of Higher Education, On Behalf Of The Univ. Of Nevada, Reno

Integrated circuits based biosensors

Methods, systems, and devices are disclosed for implementing molecular sensors. In one aspect, an ion-gas sensor device includes a pre-concentration module to collect and concentrate a gas-phase chemical for analysis; a piezoelectric fan to produce an air-flow through acoustic streaming to drive the gas-phase chemical released by the pre-concentration module to one or more downstream modules; an ionizer downstream from the piezoelectric fan to ionize the gas-phase chemical; and a gas sensor downstream from the piezoelectric fan and the ionizer to detect the ionized gas-phase chemical driven by the piezoelectric fan.
Cornell University

Method of manufacturing pressure sensor and pressure sensor

A method of manufacturing a pressure sensor including a tubular housing having a lid-shaped support plate formed at one end of the housing, a diaphragm, a piezoelectric element for outputting an electrical signal corresponding to pressure received by the diaphragm, and a rod-shaped transmission section for transmitting the pressure to the piezoelectric element. The method includes the steps of accommodating the piezoelectric element into the housing, and fixing the transmission section to the housing through the diaphragm in a state in which a predetermined preload is applied to the piezoelectric element in an axial direction of the housing by pressing the piezoelectric element against the support plate by the transmission section..
Ngk Spark Plug Co., Ltd.

System and analyzing athletic activity

Various sensor systems are described herein, including inserts having sensors thereon, which are configured to be received in an article of footwear. The inserts may be connected to a sole member of the footwear, or may function as a sole member.
Nike, Inc.

Piezoelectric thin film, manufacturing the same, piezoelectric thin film manufacturing apparatus and liquid ejection head

A piezoelectric thin film is manufactured by sequentially executing: a step of coating a substrate by applying a coating solution containing an organic solvent and a piezoelectric thin film precursor to form a coating layer; a step of evaporating the organic solvent from the coating layer in a windless environment to obtain a dried coating layer containing the piezoelectric thin film precursor; and a step of heating the dried coating layer to form a piezoelectric thin film from the dried coating layer containing the piezoelectric thin film precursor.. .
Canon Kabushiki Kaisha

Liquid droplet discharging device

A liquid droplet discharging device includes a liquid droplet discharging head including a nozzle hole, a pressurized liquid chamber communicating with the nozzle hole, a vibration plate constituting a side of the pressurized liquid chamber, a control device, and a thin film piezoelectric substance to vibrate the vibration plate by a drive voltage to discharge liquid droplets and a voltage application device to apply a voltage waveform having a voltage equal to or greater than the drive voltage between when the main power is activated and when a first print starts.. .

Liquid ejecting apparatus, head unit, and controlling liquid ejecting apparatus

A liquid ejecting apparatus includes: a modulation circuit that generates a modulated signal obtained by performing pulse modulation on a source signal; a transistor that amplifies the modulated signal to generate an amplified modulated signal; a lowpass filer that smoothes the amplified modulated signal to generate a driving signal; a piezoelectric element that is displaced when the driving signal is applied; and a circuit substrate on which the modulation circuit, the transistor, and the lowpass filter are mounted. The transistor includes a die, a first electrode, a second electrode, a third electrode, a conductive die pad, a first lead which is electrically connected to the second electrode by a bonding wire, and a second lead which is electrically connected to the third electrode by a bonding wire.
Seiko Epson Corporation

Piezoelectric jetting system and method with amplification mechanism

A jetting dispenser includes an actuator with a piezoelectric unit that lengthens by a first distance in response to an applied voltage, and an amplifier operatively coupled to the piezoelectric unit. The amplifier includes first and second ends and the second end moves through a second distance, larger than the first distance under the applied voltage.
Nordson Corporation

Piezoelectric jetting system with quick release jetting valve

A jetting dispenser including an actuator housing, an actuator, a fluid body housing, and a fluid body. The actuator is located in the actuator housing and the fluid body housing is coupled to the actuator housing.
Nordson Corporation

Piezoelectric jetting system and method

A system and method for jetting a viscous material includes an electronic controller and a jetting dispenser operatively coupled with the electronic controller. The jetting dispenser includes an outlet orifice and a piezoelectric actuator operatively coupled with a movable shaft.
Nordson Corporation

Acoustic manipulation of particles in standing wave fields

A method for separating a second fluid or a particulate from a host fluid is disclosed. The method includes flowing the mixture through an acoustophoretic device comprising an acoustic chamber, an ultrasonic transducer, and a reflector.
Flodesign Sonics, Inc.

Occlusion measurement device and detecting occlusal force

An information processing device (104) performs integration processing for each intersection point for raw data outputted from an occlusal force detecting device having a sensor sheet (102) which uses an organic piezoelectric film (201), to create occlusal force data, wherein the raw data includes address information of each intersection point and data obtained based on a signal indicating a change in occlusion force.. .
Gc Corporation

Piezoelectric particle accelerator

A particle accelerator is provided that includes a piezoelectric accelerator element, where the piezoelectric accelerator element includes a hollow cylindrical shape, and an input transducer, where the input transducer is disposed to provide an input signal to the piezoelectric accelerator element, where the input signal induces a mechanical excitation of the piezoelectric accelerator element, where the mechanical excitation is capable of generating a piezoelectric electric field proximal to an axis of the cylindrical shape, where the piezoelectric accelerator is configured to accelerate a charged particle longitudinally along the axis of the cylindrical shape according to the piezoelectric electric field.. .
The Board Of Trustees Of The Leland Stanford Junior University

Piezoelectric element, and piezoelectric vibrating apparatus, portable terminal, sound generator, sound generating apparatus, and electronic device comprising the piezoelectric element

A piezoelectric element includes: a stacked body in which internal electrodes and piezoelectric layers are laminated; surface electrodes disposed at least on one principal face of the stacked body; and side electrodes disposed on a side face of the stacked body, the internal electrodes extending to the side face, the side electrodes electrically connecting the internal electrodes extending to the side face and the surface electrodes. The internal electrodes each includes a first primary electrode having an active region and a led-out region extending to the side face of the stacked body, the internal electrodes each including a first secondary electrode, the first primary electrodes being disposed in inter-piezoelectric layer regions, the first secondary electrodes being disposed in the inter-piezoelectric layer regions so as to be apart from the led-out regions of the first primary electrodes, and the first secondary electrode is connected to one of the side electrodes..
Kyocera Corporation

Self-powered door and window opening sensor

Systems and methods for detecting an opening and closing of an object, such as a door or window. The methods comprise: causing a piezoelectric transducer to oscillate in response to an opening of the object; harvesting energy generated as a result of the piezoelectric transducer's oscillation to power a transceiver; and transmitting, from the transceiver to a remote device, information indicating that the opening of the object has been detected by a wireless sensor coupled to the object.
Tyco Fire & Security Gmbh

Poly-actuator

Similar to combustion engines including multiple cylinders engaged with a crankshaft, multiple piezoelectric stack actuators (psa) engaged with a common output rod can produce smooth, long stroke motion with desired properties. In particular, when equally spaced multiple units are arranged to push sinusoidal gear teeth on the output rod, the system exhibits unique collective behaviors thanks to “harmonic” effects of the multiple units.
Massachusetts Institute Of Technology

Ultrasonic motor

The invention relates to an ultrasonic motor, comprising a piezoelectric ultrasonic actuator (1) having four friction elements (4) disposed thereon, a friction surface (6) which is in frictional contact with the friction elements, and an electrical excitation device (16), wherein the ultrasonic actuator is in the shape of a ring or hollow cylinder, having an inner circumferential surface (14), an outer circumferential surface (12) and two planar end surfaces (5) connecting the inner and the outer circumferential surfaces. The four friction elements are disposed on one of the end surfaces of the ultrasonic actuator so as to be spaced equidistantly with respect to the circumferential direction, such that in each case two of the friction elements lie diametrically opposite, and the ultrasonic actuator comprises twelve identical circumferential sections (10), each of which has a generator for an acoustic standing wave to be formed in the ultrasonic actuator and the deformations of the ultrasonic actuator caused by the standing wave lead to deflections of the friction elements on a movement path inclined with respect to the end surface and/or a movement path substantially perpendicular to the end surface.
Physik Instrumente (pi) Gmbh & Co. Kg

Piezoelectric ultrasonic motor and operation the same

A piezoelectric ultrasonic motor includes: a drive piezoelectric material wherein a plurality of piezoelectric elements, which are polarized by opposite polarities along a circumferential direction around a rotation shaft, are alternately arranged, and a vibration-control piezoelectric material wherein a plurality of piezoelectric elements, which are arranged along a circumferential direction around the rotation shaft and polarized by opposite polarities, are arranged to correspond to the plurality of piezoelectric elements of the drive piezoelectric material, wherein ac power and another ac power having a phase difference with respect to the ac power are respectively applied to the piezoelectric material and the vibration-control piezoelectric material, in a vibration damping area of the drive piezoelectric material.. .
Samsung Electronics Co., Ltd

Wireless piezoelectric indicator

An apparatus includes a piezoelectric sensor, a charge manager, a processor, and a transceiver. The piezoelectric sensor is configured to generate a first electrical signal upon detection of a vibration from a detector.
Oneevent Technologies, Inc.

Fiberoptic tuned-induction sensors for downhole use

A method of sensing electromagnetic (em) fields downhole may include filtering a voltage signal induced in a coil antenna by an em field to produce a filtered signal, said filtering being performed by a resonance tuning filter, and applying the filtered signal to a piezoelectric element to modify a strain of an optical fiber. A sensing system may include a cable deployed downhole and coupled to an interface unit.
Halliburton Energy Services, Inc.

Force sensor for manually operated or pneumatic presses

A force sensor for measuring axially occurring forces in manually operated or pneumatic presses has a central axis and an outer diameter and includes a bolt and a nut that preload between them a piezoelectric force washer with a plug connection. The washer has an inner end face defining a first bore having a first diameter with an internal thread.
Kistler Holding Ag

Piezoelectric actuators optimized for synthetic jet actuators

A synthetic jet actuator and a method for optimizing a synthetic jet actuator to meet operating requirements and physical constraints may include estimating dimension and a resonance frequency of an air cavity of the synthetic jet actuator, and using the estimated resonance frequency to the estimate dimensions of a piezoelectric actuator of the synthetic jet actuator. Individual simulations of the air cavity and piezoelectric actuator, and a coupled simulation may be performed using the estimated dimensions, and the dimensions may be revised and simulations re-executed to match the resonance frequencies of the air chamber and the piezoelectric actuator.
The Boeing Company



Piezoelectric topics:
  • Piezoelectric
  • Piezoresistive Material
  • Wave Device
  • Acoustic Wave
  • Electronic Device
  • Attenuation
  • Control Unit


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    This listing is a sample listing of patent applications related to Piezoelectric for is only meant as a recent sample of applications filed, not a comprehensive history. There may be associated servicemarks and trademarks related to these patents. Please check with patent attorney if you need further assistance or plan to use for business purposes. This patent data is also published to the public by the USPTO and available for free on their website. Note that there may be alternative spellings for Piezoelectric with additional patents listed. Browse our RSS directory or Search for other possible listings.


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