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Piezo patents



      
           
This page is updated frequently with new Piezo-related patent applications. Subscribe to the Piezo RSS feed to automatically get the update: related Piezo RSS feeds. RSS updates for this page: Piezo RSS RSS


Surface potential sensor and copying machine

Omron

Surface potential sensor and copying machine

Liquid jet head,  liquid jet apparatus and method of manufacturing liquid jet head

Sii Printek

Liquid jet head, liquid jet apparatus and method of manufacturing liquid jet head

Liquid jet head,  liquid jet apparatus and method of manufacturing liquid jet head

Ricoh

Droplet discharging head and image forming apparatus

Date/App# patent app List of recent Piezo-related patents
01/29/15
20150030189
 Electronic device patent thumbnailnew patent Electronic device
The content of sound leakage from a vibrating plate that vibrates due to a piezoelectric element is made difficult to recognize. An electronic device (1) according to the present invention includes a piezoelectric element (30) and a vibrating plate (10) that vibrates due to the piezoelectric element (30), the electronic device (1) causing the vibrating plate (10) to generate air-conducted sound and vibration sound that is transmitted by vibrating a part of a human body.
Kyocera Corporation
01/29/15
20150030188
 Electronic device patent thumbnailnew patent Electronic device
Provided is an electronic device including: a piezoelectric element; a vibration plate to which the piezoelectric element is joined for vibration; and a housing to which the vibration plate is joined. Vibration sound, which is transmitted by vibrating a part of a human body, is generated by the vibration plate.
Kyocera Corporation
01/29/15
20150029271
 Liquid jet head, liquid jet apparatus and  manufacturing liquid jet head patent thumbnailnew patent Liquid jet head, liquid jet apparatus and manufacturing liquid jet head
A liquid jet head includes a piezoelectric body substrate having a plurality of groove arrays, in each of which ejection grooves penetrating from the upper surface to the lower surface are arrayed in a reference direction, drive electrode provided on side faces of the ejection grooves, and terminal electrodes provided on the lower surface, and electrically connected to the drive electrodes; and a flexible circuit board electrically connected from the terminal electrodes, and connected to the lower surface of the piezoelectric body substrate. The piezoelectric body substrate includes a first opening portion that penetrates from the upper surface to the lower surface between the plurality of groove arrays, and the flexible circuit board is led out from the lower surface to the upper surface of the piezoelectric body substrate through the first opening portion..
Sii Printek Inc.
01/29/15
20150029270
 Droplet discharging head and image forming apparatus patent thumbnailnew patent Droplet discharging head and image forming apparatus
A droplet discharging head includes: a nozzle substrate that includes a nozzle opening to discharge a droplet therethrough; a liquid chamber substrate that includes liquid pressure chambers communicating with the nozzle openings; a vibration plate arranged to face the nozzle substrate with the liquid chamber substrate interposed therebetween; piezoelectric elements that are provided to face the liquid pressure chambers with the vibration plate interposed therebetween and are arranged in a predetermined direction; a driving element provided, in a flip-chip implementation, on a flow path substrate that includes the nozzle substrate, the liquid chamber substrate, the vibration plate, and the piezoelectric elements; and a first reinforcing wire that is disposed to at least one of the flow path substrate and the driving element, has a band shape extending in a direction along a row of the piezoelectric elements, and is connected to a common electrode shared by the piezoelectric elements.. .
Ricoh Company, Ltd.
01/29/15
20150029269
 Liquid jet head,  liquid jet apparatus and  manufacturing liquid jet head patent thumbnailnew patent Liquid jet head, liquid jet apparatus and manufacturing liquid jet head
The liquid jet head is provided with a piezoelectric substrate having a plurality of groove rows in each of which elongated ejection grooves and elongated non-ejection grooves are alternately arranged in a reference direction. In adjacent ones of the groove rows, ends on a second side of ejection grooves included in a groove row located on a first side and ends on the first side of non-ejection grooves included in a groove row located on the second side are separated from each other, and overlap each other in a thickness direction of the piezoelectric substrate..
Sii Printek Inc.
01/29/15
20150028966
 Elastic wave filter device and manufacturing  the same patent thumbnailnew patent Elastic wave filter device and manufacturing the same
An elastic wave filter device includes a transmission elastic wave filter chip and a reception elastic wave filter chip. The transmission elastic wave filter chip includes an insulating support substrate, a piezoelectric layer directly or indirectly supported by the support substrate, and an idt electrode in contact with the piezoelectric layer.
Murata Manufacturing Co., Ltd.
01/29/15
20150028881
 Surface potential sensor and copying machine patent thumbnailnew patent Surface potential sensor and copying machine
This surface potential sensor is provided with an electret electrode (28), which is configured of a metal film (26) and an electret film (27), said electret electrode being provided on an upper surface of a diaphragm (25) of a semiconductor substrate. Four piezoresistors (29a, 29b, 29c, 29d) are formed on the diaphragm (25), and a distortion quantity detecting unit (32) is configured by forming a bridge circuit using the piezoresistors.
Omron Corporation
01/29/15
20150028726
 Piezoelectric sheet, piezoelectric device including the same, and  fabricating piezoelectric device patent thumbnailnew patent Piezoelectric sheet, piezoelectric device including the same, and fabricating piezoelectric device
There is provided a piezoelectric device, including a laminated body in which a plurality of piezoelectric sheets including a first piezoelectric substance having a single crystal structure and a second piezoelectric substance having a polycrystalline structure are laminated, first and second internal electrodes interposed between the piezoelectric sheets and alternating so as to have different polarities in a laminated direction, and first and second external electrodes formed on one surface of the laminated body to be electrically connected to the first and second internal electrodes, wherein the first piezoelectric substance has an aspect ratio (d/l) of 1/8 to 1/4.. .
Samsung Electro-mechanics Co., Ltd.
01/29/15
20150028723
 Piezoelectric actuator patent thumbnailnew patent Piezoelectric actuator
A piezoelectric actuator comprises a substantially rectangular parallelepiped piezoelectric element. One outer surface of the piezoelectric element includes a first region, and a second region located such as to project from the first region and to overlap a region corresponding to an active portion in the one outer surface.
Tdk Corporation
01/29/15
20150028722
 Piezoelectric energy recovery system patent thumbnailnew patent Piezoelectric energy recovery system
An energy recovery system for converting mechanical vibration to electric energy is disclosed. The system includes a case providing a plurality of sidewalls, a battery received in the case with a part of the battery positioned on one of the sidewalls of the case, and a number of piezoelectric energy collectors.
Aac Technologies Pte. Ltd.
01/29/15
20150028396
new patent

Ph sensor with substrate or bonding layer configured to maintain piezoresistance of the isfet die


Embodiments described herein provide for a ph sensor that is configured for use over a pressure and temperature range. The isfet die of the ph sensor is bonded to the substrate of the ph sensor with a bonding layer that is disposed between the substrate and the isfet die.
Honeywell International Inc.
01/29/15
20150028249
new patent

Piezoelectric ceramics, piezoelectric element, liquid ejection head, ultrasonic motor, and dust removing device


Provided is a lead-free piezoelectric ceramics having enhanced mechanical quality factor (qm) and mechanical strength. The piezoelectric ceramics, includes at least a first crystal grain and a second crystal grain.
Canon Kabushiki Kaisha
01/29/15
20150027415
new patent

Method for controlling pressure in a high-pressure region of an internal combustion engine


A method for controlling pressure in a high-pressure region of an internal combustion engine includes adjusting a fuel outflow from the high-pressure region into a low-pressure region by means of an injector, which has a control valve adjusted by a piezo actuator and a control chamber. The method includes charging the piezo actuator by a first signal such that the control valve is moved from a closed position to a partially open position and fuel flows out from the high-pressure region into the low-pressure region, discharging the piezo actuator by a second signal such that the control valve is moved into the closed position, and partially discharging the piezo actuator by a third signal after the first signal and before the second signal.
Continental Automotive Gmbh
01/29/15
20150027231
new patent

Mechanical quantity measuring device


A mechanical quantity measuring device (semiconductor strain sensor) has a semiconductor chip including a plurality of piezoresistive elements formed on a front surface of a semiconductor substrate, a lead wire unit electrically connected to a plurality of electrodes of the semiconductor chip, and a plate member joined to a rear surface of the semiconductor chip. Further, the plate member includes a first region facing the rear surface of the semiconductor chip and a second region provided adjacent to the first region, and a thickness of the plate member in the first region is made larger than a thickness in the second region..
Hitachi, Ltd.
01/29/15
20150026940
new patent

Method and device for repolarizing a piezoelectric actuator of an injector of an internal combustion engine of a used vehicle


The successive first, second and third time intervals defining a repolarization sequence of the piezoelectric actuator.. .
01/22/15
20150025487

Instructional medical treatment system


The present invention discloses an appliance for administering medical treatment to a person, as well as methods of using the appliance. In various embodiments, the appliance may be comprised of a medical device, an electronic processor, an electronic display (such as a liquid crystal display (lcd)), an audio output device (such as a piezoelectric speaker/microphone), electronic controls for controlling the operation of the electronic processor, and an electronic input receptacle (such as a dvd drive or usb port) adapted to receive and electronically access an electronic storage device (such as a dvd or flash memory device).
Bluesky Medical Group, Inc.
01/22/15
20150025422

Methods and devices for modulating cellular activity using ultrasound


The present invention comprises methods and devices for modulating the activity or activities of living cells, such as cells found in or derived from humans, animals, plants, insects, microorganisms and other organisms. Methods of the present invention comprise use of the application of ultrasound, such as low intensity, low frequency ultrasound, to living cells to affect the cells and modulate the cells' activities.
Arizona Board Of Regents For And On Behalf Of Arizona State University
01/22/15
20150025418

System and evaluating tissue


A sensor system for measuring an elastic modulus and a shear modulus and a method for evaluating a tissue. The invention pertains to a method for determining the presence of and/or characterizing abnormal growths, using a piezoelectric finger sensor (pefs) system.
Philadelphia Health & Education Corporation D/b/a Drexel University College Of Medicine
01/22/15
20150024537

Ultrasonic transducer, biological sensor, and manufacturing an ultrasonic transducer


A method for manufacturing an ultrasonic transducer includes: forming a piezoelectric element by laminating a lower electrode, a piezoelectric body, and an upper electrode on a first face of a support film; affixing a reinforcing substrate that covers the piezoelectric element to the first face of the support film; forming a photosensitive resin substrate to a second face of the support film that is on an opposite side from the first face; forming an opening in the resin substrate by irradiating the resin substrate with light; and removing the reinforcing substrate.. .
Seiko Epson Corporation
01/22/15
20150024373

Microfluidic chip


A microfluidic chip orients and isolates components in a sample fluid mixture by two-step focusing, where sheath fluids compress the sample fluid mixture in a sample input channel in one direction, such that the sample fluid mixture becomes a narrower stream bounded by the sheath fluids, and by having the sheath fluids compress the sample fluid mixture in a second direction further downstream, such that the components are compressed and oriented in a selected direction to pass through an interrogation chamber in single file formation for identification and separation by various methods. The isolation mechanism utilizes external, stacked piezoelectric actuator assemblies disposed on a microfluidic chip holder, or piezoelectric actuator assemblies on-chip, so that the actuator assemblies are triggered by an electronic signal to actuate jet chambers on either side of the sample input channel, to jet selected components in the sample input channel into one of the output channels..
Premium Genetics (uk) Ltd.
01/22/15
20150023857

Piezoelectric and electrorestrictor materials


One embodiment provides a method, comprising: calculating, using at least one computer, a distance to a hull for an alloy xxy1-x in the range 0.01≦x≦0.99, where x and y are perovskite materials; determining, using the at least one computer, a preferred phase for the alloy in the range 0.01≦x≦0.99; and selecting an alloy composition having the distance to the hull being less than 0.1 ev/atom and for which the preferred phase in at least a portion of the range 0.01≦x≦0.99 is a tetragonal phase. Piezoelectric materials as selected by the method are also provided..
Robert Bosch Llc Research And Technology Center
01/22/15
20150023819

Piezoelectric fan


A piezoelectric fan in which vibration of blades is unaffected by external noise includes a vibrating plate including blades and a base. First piezoelectric elements are attached to a side of a first blade adjacent to the base.
Murata Manufacturing Co., Ltd.
01/22/15
20150023531

Electronic device


According to the present invention, air conduction sound and human body vibration sound (e.g. Bone conduction sound) are transmitted to a user without a need for pressing a vibration body itself to an ear.
Kyocera Corporation
01/22/15
20150022980

Print media with inductive secondary


An item of print media (30) including an inductive secondary (50) for providing power to a load (32). The inductive secondary is responsive to an electromagnetic flux to generate a time-varying current or voltage therein.
Access Business Group International Llc
01/22/15
20150022871

Mirror drive device and driving method thereof


In a mirror drive device, a first actuator section and a second actuator section are arranged on both sides of a mirror supporting section that supports a mirror section so as to sandwich the mirror supporting section. The upper electrode of a first actuator section includes a first electrode section and a second electrode section, and an upper electrode of a second actuator section includes a third electrode section and a fourth electrode section.
Fujifilm Corporation
01/22/15
20150022594

Liquid jet head, liquid jet apparatus and manufacturing liquid jet head


A liquid jet head includes a piezoelectric body substrate on which ejection grooves penetrating from an upper surface to a lower surface and non-ejection grooves open on the lower surface are alternately arranged in a reference direction and form a groove row, a cover plate that includes a liquid chamber communicating with the ejection grooves and is bonded on the upper surface of the piezoelectric body substrate, a nozzle plate that includes nozzles communicating with the ejection grooves and is bonded on the lower surface of the piezoelectric body substrate. Common drive electrodes are installed on side surfaces of the ejection grooves, which are on the lower-surface side from nearly 1/2 of a thickness of the piezoelectric body substrate, and individual drive electrodes are installed on side surfaces of the non-ejection grooves, which are on the lower-surface side from nearly 1/2 of a thickness of the piezoelectric body substrate..
Sii Printek Inc.
01/22/15
20150022593

Liquid ejecting apparatus and controlling liquid ejecting apparatus


A pressure chamber array includes one or more dummy pressure chambers in which ejection of ink is not performed, the dummy pressure chamber includes a piezoelectric element, and a drive potential generator continues to apply a drive potential to the piezoelectric element corresponding to the dummy pressure chamber, while the ejection of the ink from a nozzle of at least a pressure chamber adjacent to the dummy pressure chamber is performed.. .
Seiko Epson Corporation
01/22/15
20150022592

Electromechanical transducer, droplet ejection head, and manufacturing electromechanical transducer


An electromechanical transducer includes a first electrode mounted on one of a substrate and a base film, an electromechanical transducer film mounted on the first electrode and made of a piezoelectric substance having a perovskite crystal structure, and a second electrode mounted on the electromechanical transducer film. The electromechanical transducer film includes a {100} plane preferentially oriented to be orthogonal to a thickness direction of the electromechanical transducer film and has a full width at half maximum corresponding to a {200} plane in an x-ray diffraction measurement curve in 2θ-ω scan that is measured by emitting an x-ray beam onto a surface of the electromechanical transducer film at an incident angle θ.
Ricoh Company, Ltd.
01/22/15
20150022459

Piezoelectric actuator and method


An apparatus including a display; and at least one piezoelectric member connected to the display. The at least one piezoelectric member is configured to move the display.
Nokia Corporation
01/22/15
20150022275

Vibrator element, vibrator, oscillator, electronic apparatus, and moving object


A vibrator element includes a base portion, a vibrating arm extending from the base portion, a first electrode provided on the vibrating arm, a second electrode provided above the first electrode, a piezoelectric body arranged between the first electrode and the second electrode, and an insulating film arranged between the first electrode and the piezoelectric body, in which the material of the first electrode contains tin, the material of the insulating film contains sio2, and the material of the piezoelectric body contains aln.. .
Seiko Epson Corporation
01/22/15
20150022274

Piezoelectric film producing process, vibrator element, vibrator, oscillator, electronic device, and moving object


A piezoelectric film producing process includes depositing a piezoelectric body in a mixed atmosphere of n2 gas and ar gas by using a sputtering method, using an al—cu alloy as deposition material.. .
Seiko Epson Corportion
01/22/15
20150022058

Piezoelectric actuator, piezoelectric vibration apparatus, and portable terminal


A piezoelectric actuator includes a stacked body composed of internal electrodes and piezoelectric layers which are stacked on each other; and a surface electrode disposed on at least one of main surfaces of the stacked body so as to be electrically connected to the internal electrodes. The internal electrodes each includes a first electrode and a second electrode.
Kyocera Corporation
01/22/15
20150022057

Piezoelectric device, manufacturing the same, and driven assembly with the same


The present invention relates to a piezoelectric device. A piezoelectric device in accordance with an embodiment of the present invention includes a piezoelectric member and a connection member which are coupled to each other, wherein the piezoelectric member includes a polycrystalline member made of a polycrystalline piezoelectric material, a single crystal member made of a single crystal piezoelectric material and coupled to the connection member, and a textured member provided between the polycrystalline member and the single crystal member and having intermediate properties of the polycrystalline piezoelectric material and the single crystal piezoelectric material..
Samsung Electro-mechanics Co., Ltd.
01/22/15
20150022056

System for driving a piezoelectric load and making same


A driver system comprises a direct current (dc) voltage source and a first bi-directional dc-to-dc converter having a primary side coupled to the dc voltage source and a secondary side and configured to convert a first voltage on the primary side to a second voltage on the secondary. The driver system also comprises a second bi-directional dc-to-dc converter having a primary side coupled to the dc voltage source and a secondary side coupled to the secondary side of the first bi-directional dc-to-dc converter and configured to convert the first voltage on the primary side to a third voltage on the secondary.
General Electric Company
01/22/15
20150022054

Thermal energy harvesting optimisation with bistable elements and collaborative behavior


System for converting thermal energy into electrical energy (s1) intended to be arranged between a hot source (sc) and a cold source (sf), comprising means for converting thermal energy into mechanical energy (6) and a piezoelectric material, with the means for converting thermal energy into mechanical energy (6) comprising groups (g1, g2) of at least three bimetallic strips (9, 11, 13) linked mechanically together by their longitudinal ends and suspended above a substrate (12), each bimetallic strip (9, 11, 13) comprising two stable states wherein it has in each of the states a curvature, with two directly adjacent bimetallic strips (9, 11, 13) having for a given temperature opposite curvatures, with the switching from one stable state of the bimetallic strips (9, 11, 13) to the other causing the deformation of a piezoelectric material.. .
Stmicroelectronics (crolles 2) Sas
01/22/15
20150021290

Method for fabricating acoustic wave device


An acoustic wave device includes a piezoelectric substrate, interdigitated electrodes formed on the piezoelectric substrate, and an insulation film that is formed on a surface of the interdigitated electrodes by atomic layer deposition and includes aluminum oxide.. .
Taiyo Yuden Co., Ltd.
01/22/15
20150020678

Ultra light bar armor


Bar armor currently provides a means of providing partial protection of vehicles and structures against certain types of rocket propelled grenades (rpgs). However, the individual bars must provide enough strength to cut through or deform the outer ogive of an rpg and cause electrical contact with the inner ogive.
01/22/15
20150020612

Method and means to monitor seeder row unit downforce


A method of monitoring forces in a planter includes measuring compressive force between contacting surfaces of the depth regulation member. The measuring may be performed with a sensor such as a piezoresistive sensor.
Ag Leader Technology
01/22/15
20150020585

Tire module with piezo-electric transducer and tire equipped therewith


A tire module for attachment to an inside of a pneumatic tire for vehicles includes a device for measuring and/or monitoring the air pressure in the tire. A transmitter for transmitting radio signals, which contains information regarding the air pressure in the tire, includes a mechanical-electrical transducer having a flexible piezo-electrical element, which converts alternating changes in shape of the piezo-electric element caused by the rolling tire into electric energy and includes a storage unit for the electric energy, which is connected to the transducer.
Huf Hülsbeck & Fürst Gmbh & Co. Kg
01/15/15
20150020245

Methods and systems for optimizing frequency modulation atomic force microscopy


Energy dissipation measurements in frequency modulation-atomic force microscopy (fm-afm) should provide additional information for dynamic force measurements as well as energy dissipation maps for robust material properties imaging as they should not be dependent directly upon the cantilever surface interaction regime. However, unexplained variabilities in experimental data have prevented progress in utilizing such energy dissipation studies.
The Royal Institute For The Advancement Of Learning / Mcgill University


Popular terms: [SEARCH]

Piezo topics: Piezoelectric, Transducer, Ultrasonic, Electric Actuator, Electronic Device, Electronic Apparatus, Damping Force, Radial Flow, Semiconductor Material, Semiconductor, Sound Transducer, Ultrasound, Synchronous, Asynchronous, Liquid Adhesive

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This listing is a sample listing of patent applications related to Piezo 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 Piezo with additional patents listed. Browse our RSS directory or Search for other possible listings.
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