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Tetrafluoroethylene patents



      
           
This page is updated frequently with new Tetrafluoroethylene-related patents. Subscribe to the Tetrafluoroethylene RSS feed to automatically get the update: related Tetrafluoroethylene RSS feeds.

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Date/App# patent app List of recent Tetrafluoroethylene-related patents
04/17/14
20140107250
 Fixing member, method for manufacturing the same, fixing apparatus, and image forming apparatus patent thumbnailFixing member, method for manufacturing the same, fixing apparatus, and image forming apparatus
The present invention relates to a fixing member including a surface layer containing pfa, the fixing member being excellent in wear resistance and having high release properties to a toner. The fixing member includes a base member, an elastic layer provided on the surface of the base member, and a surface layer, wherein the surface layer contains a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer having a particular partial structure, and has a surface having a contact angle of 67 degrees or more as measured in a mixed liquid for a wetting tension test having a wetting tension of 31.0 mn/m..
04/17/14
20140106084
 Fluorocarbon resin composite, cookware, cooker, roller for office automation equipment, belt for office automation equipment , and method for producing them patent thumbnailFluorocarbon resin composite, cookware, cooker, roller for office automation equipment, belt for office automation equipment , and method for producing them
A fluorocarbon resin composite includes a fluorocarbon resin layer on a base, in which a fluorocarbon resin constituting the fluorocarbon resin layer is crosslinked by electron beam irradiation, and the base has a desired shape obtained by machining. The fluorocarbon resin is composed of a tetrafluoroethylene-perfluoro(alkyl vinyl ether) copolymer, polytetrafluoroethylene, or a mixture of the tetrafluoroethylene-perfluoro(alkyl vinyl ether) copolymer and polytetrafluoroethylene.
04/17/14
20140105955
 Thermoplastic fluoropolymer-coated medical devices patent thumbnailThermoplastic fluoropolymer-coated medical devices
A medical device provided with at least a partial surface coating of a thermoplastic copolymer of tetrafluoroethylene and perfluoroalkylvinylether that is free of cross-linking monomers and curing agents. The fluoropolymer coating is preferably an amorphous thermoplastic, is highly inert and biocompatible, has elastomeric characteristics that provide desirable mechanical properties such as good flexibility and durability.
04/10/14
20140100665
 Non-resorbable plugs patent thumbnailNon-resorbable plugs
A non-resorbable wound dressing can include a plug made from polytetrafluoroethylene (ptfe). The plug can have a three-dimensional shape.
04/10/14
20140096682
 Fluorinated surfactants and stabilization of polytetrafluoroethylene (ptfe) particles in hollow fiber spin solutions patent thumbnailFluorinated surfactants and stabilization of polytetrafluoroethylene (ptfe) particles in hollow fiber spin solutions
Methods and apparatus relate to recovery of carbon dioxide and/or hydrogen sulfide from a gas mixture. Separating of the carbon dioxide, for example, from the gas mixture utilizes a liquid sorbent for the carbon dioxide.
04/10/14
20140096334
 Paint applicator patent thumbnailPaint applicator
An applicator includes a cylindrical core having an interior surface and an exterior surface. A backing layer is attached to at least a portion of the exterior surface of the cylindrical core.
04/03/14
20140094557
 Expandable tfe copolymers, method of making, and porous, expanded articles thereof patent thumbnailExpandable tfe copolymers, method of making, and porous, expanded articles thereof
A true tetrafluoroethylene (tfe) copolymer of the fine powder type is provided, wherein the copolymer contains polymerized comonomer units of at least one comonomer other than tfe in concentrations of at least or exceeding 1.0 weight percent, and which can exceed 5.0 weight percent, wherein the copolymer is expandable, that is, the copolymer may be expanded to produce strong, useful, expanded tfe copolymeric articles having a microstructure of nodes interconnected by fibrils. Articles made from the expandable copolymer may include tapes, membranes, films, fibers, and are suitable in a variety of end applications, including medical devices..
03/27/14
20140085601
 Contact lens having a chip integrated into a polymer substrate and method of manufacture patent thumbnailContact lens having a chip integrated into a polymer substrate and method of manufacture
Contact lenses and methods of manufacture are provided. In one aspect, a method includes: positioning components in predefined locations on a first surface; applying pressure on the components employing a second surface; providing molten material between the first surface and the second surface and around the components; embedding the components in a substrate by cooling the molten material and causing the molten material to harden, the substrate being a substantially solid form of molten material; and removing the first surface and the second surface after embedding the components in the substrate.
03/27/14
20140083929
 Microporous modified-polytetrafluoroethylene membrane, porous-modified-polytetrafluoroethylene-membrane composite and production process thereof, and separation membrane element patent thumbnailMicroporous modified-polytetrafluoroethylene membrane, porous-modified-polytetrafluoroethylene-membrane composite and production process thereof, and separation membrane element
The invention offers a microporous modified-polytetrafluoroethylene membrane that is a microporous membrane having a significantly small pore diameter and narrow pore-diameter distribution and that can remove microscopic foreign particles at high efficiency when used as a filtration membrane. A microporous modified-polytetrafluoroethylene membrane that is a microporous membrane produced by the steps of producing a copolymer of hexafluoropropylene or perfluoroalkyl ether and tetrafluoroethylene having the number of moles not less than 50 times that of the hexafluoropropylene or perfluoroalkyl ether, forming the copolymer into the shape of a membrane, heating the membrane to the melting point of the copolymer or above to bake the copolymer, cooling the obtained baked product, and stretching the baked product and that has a mean flow pore diameter of 30 nm or less; a porous-modified-polytetrafluoroethylene-membrane composite that incorporates the microporous membrane and a production process of the composite; and a separation membrane element incorporating the porous-modified-polytetrafluoroethylene-membrane composite..
03/20/14
20140081414
 Electrospun material covered medical appliances and methods of manufacture patent thumbnailElectrospun material covered medical appliances and methods of manufacture
A medical appliance or prosthesis may comprise one or more layers of electrospun nanofibers, including electrospun polymers. The electrospun material may comprise layers including layers of polytetrafluoroethylene (ptfe).
03/20/14
20140080031
Dual layered eptfe polyelectrolyte membranes
A supported membrane for fuel cell applications includes a first expanded polytetrafluoroethylene support and a second expanded polytetrafluoroethylene support. Both the first and second expanded polytetrafluoroethylene supports independently have pores with a diameter from about 0.1 to about 1 microns and a thickness from about 4 to 12 microns.
03/20/14
20140079758
Electrospun material covered medical appliances and methods of manufacture
A medical appliance or prosthesis may comprise one or more layers of electrospun nanofibers, including electrospun polymers. The electrospun material may comprise layers including layers of polytetrafluoroethylene (ptfe).
03/20/14
20140077419
Fluororesin composite material, cooking utensil, cooker, roller for oa apparatus, belt for oa apparatus, and processes for producing these
A fluorocarbon resin composite includes a fluorocarbon resin layer on a base, in which a fluorocarbon resin constituting the fluorocarbon resin layer is crosslinked by electron beam irradiation, and the base has a desired shape obtained by machining. The fluorocarbon resin is composed of a tetrafluoroethylene-perfluoro(alkyl vinyl ether) copolymer, polytetrafluoroethylene, or a mixture of the tetrafluoroethylene-perfluoro(alkyl vinyl ether) copolymer and polytetrafluoroethylene.
03/13/14
20140074225
Rotational spun material covered medical appliances and methods of manufacture
A medical appliance or prosthesis may comprise one or more layers of rotational spun nanofibers, including rotational spun polymers. The rotational spun material may comprise layers including layers of polytetrafluoroethylene (ptfe).
03/13/14
20140072793
Moisture permeable waterproof composite film and moisture permeable waterproof fabric having moisture permeable waterproof composite film
The objects of the present invention are to provide a moisture permeable waterproof composite film and to provide a moisture permeable waterproof fabric which is constructed to contain the moisture permeable waterproof composite film, each of which being capable of, while retaining the moisture permeability thereof, suppressing deterioration of waterproofness even if external force is applied to these film and fabric. This moisture permeable waterproof composite film is formed of a laminate comprising of at least one layer of porous polytetrafluoroethylene, and at least one layer of porous polyurethane..
03/13/14
20140072694
Rotational spun material covered medical appliances and methods of manufacture
A medical appliance or prosthesis may comprise one or more layers of rotational spun nanofibers, including rotational spun polymers. The rotational spun material may comprise layers including layers of polytetrafluoroethylene (ptfe).
03/13/14
20140072518
Polytetrafluoroethylene co-polymer emulsions
The present disclosure is directed to a class of fluorinated copolymers, such as a ptfe copolymers, that can be dissolved in low toxicity solvents, such as class iii solvents, and that enable the creation of stable water-in-solvent emulsions comprising the fluorinated copolymers dissolved in a low toxicity solvents and a hydrophilic agent (e.g., a therapeutic agent) dissolved in an aqueous solvent, such as water or saline.. .
03/13/14
20140072514
Polytetrafluoroethylene co-polymer emulsions
The present disclosure is directed to a class of fluorinated copolymers, such as ptfe copolymers, that can be dissolved in low toxicity solvents, such as class iii solvents, and that enable the creation of stable water-in-solvent emulsions comprising the fluorinated copolymers dissolved in a low toxicity solvents and a hydrophilic agent (e.g., a therapeutic agent) dissolved in an aqueous solvent, such as water or saline.. .
03/13/14
20140069685
Fluorine-containing elastomer composition and insulated wire
A fluorine-containing elastomer composition includes a fluorine-containing resin including a copolymer of tetrafluoroethylene and α-olefin having carbon number of 2 to 4. The copolymer of tetrafluoroethylene and α-olefin having carbon number of 2 to 4 is configured such that a peak integrated value of −132 ppm relative to a peak integrated value 10,000 of −110 to −125 ppm falls within the range of 0.3 to 2.0 in nuclear magnetic resonance analysis..
03/06/14
20140067047
Electrospun ptfe coated stent and method of use
A stent or other prosthesis may be formed by coating a single continuous wire scaffold with a polymer coating. The polymer coating may consist of layers of electrospun polytetrafluoroethylene (ptfe).
02/20/14
20140052264
Porous, stabilized craniomaxillofacial implants and methods and kits relating thereto
Porous craniomaxillofacial implants may include a plurality of polymeric particles sintered together at a plurality of contact points to form a porous network having pores; and an antioxidant disposed on a surface of at least some of the polymeric particles and/or in the pore of the porous network, so as to stabilize the implants from at least some oxidative damage during storage, transportation, and/or implementation (in vivo and/or ex vivo). Preferably, the polymeric particles include at least one of polyethylene, a polyethylene-polypropylene copolymer, a polyethylene-polybutylene copolymer, polytetrafluoroethylene, and expanded polytetrafluoroethylene..
02/20/14
20140048351
Acoustic cover assembly
An acoustic protective cover assembly comprising a porous membrane and an acoustic gasket is disclosed. The porous membrane is bonded to the acoustic gasket at a peripheral region, the membrane is left unhanded at a central region.
02/13/14
20140045078
Lithium air battery cell
A lithium-air battery cell with an electrolyte composition comprising lipo2f2 is described. The electrolyte composition comprises an electrolyte solvent, for example, one or more non-fluorinated solvents, e.g.
02/13/14
20140042835
Equipment including epitaxial co-crystallized material
An electric submersible pump motor can include a housing; and a hermetically sealed cavity defined at least in part by the housing that includes at least one material susceptible to hydrolysis, and a polymeric material that includes epitaxial co-crystals of perfluoroalkoxy (pfa) and polytetrafluoroethylene (ptfe). Various other apparatuses, systems, methods, etc., are also disclosed..
02/13/14
20140042096
Separation membrane module for processing of oil-containing waste water and method for processing oil-containing waste water
Provided is a separation membrane module which is suitable for filtration of oil-containing wastewater. The separation membrane module for oil-containing wastewater treatment separates water-insoluble oil from oil-containing wastewater that has high turbidity and/or high temperature.
02/13/14
20140042077
Fluoropolymer hollow fiber membrane with fluoro-copolymer and fluoro -terpolymer bonded end portion(s)
A hollow fiber membrane fluid transport device is disclosed wherein the fibers are comprised of polytetrafluoroethylene (ptfe), and the potting materials are comprised of fluorocopolymer and or fluoroterpolymer based materials. The potting of the device utilizes a compressed chemically resistant fluorocopolymer and or fluoroterpolymer film, allows for ease of manufacture without destruction of the ptfe hollow fibers, with high packing densities, and without the processing complexity of pre-melting, extruding, or chemical crosslinking of any polymeric adhesives.
02/13/14
20140042076
Fluoropolymer hollow fiber membrane with fluoro-copolymer and fluoro -terpolymer bonded end portion(s)
A hollow fiber membrane fluid transport device is disclosed wherein the fibers are comprised of polytetrafluoroethylene (ptfe), and the potting materials are comprised of fluorocopolymer and or fluoroterpolymer based materials. The potting of the device utilizes a compressed chemically resistant fluorocopolymer and or fluoroterpolymer film, allows for ease of manufacture without destruction of the ptfe hollow fibers, with high packing densities, and without the processing complexity of pre-melting, extruding, or chemical crosslinking of any polymeric adhesives.
02/13/14
20140041911
Flat dam and method for manufacturing chip package using the same
Disclosed herein is a flat dam formed in a package region of an insulation layer provided on a board to limit movement of an underfill and made of the hydrophobic material including any one of or at least two of perfluorooctyl acrylate (pfac), polypropylene, polytetrafluoroethylene (ptfe), and fluorine compound.. .
02/13/14
20140041789
Fluoropolymer hollow fiber membrane with fluoro-copolymer and fluoro -terpolymer bonded end portion(s) and method to fabricate
A hollow fiber membrane fluid transport device's method of manufacture is disclosed wherein the fibers are comprised of polytetrafluoroethylene (ptfe), and the potting materials are comprised of fluoropolymer based materials. The potting method described herein, utilizes a compressed chemically resistant fluorocopolymer and or fluoroterpolymer film, allows for ease of manufacture without destruction of the ptfe hollow fibers, with high packing densities, and without the processing complexity of pre-melting, extruding, or chemical crosslinking of any polymeric adhesives.
02/13/14
20140041788
Fluoropolymer hollow fiber membrane with fluoro-copolymer and fluoro -terpolymer bonded end portion(s)
A hollow fiber membrane fluid transport device's method of manufacture is disclosed wherein the fibers are comprised of polytetrafluoroethylene (ptfe), and the potting materials are comprised of fluoropolymer based materials. The potting method described herein, utilizes a compressed chemically resistant fluorocopolymer and or fluoroterpolymer film, allows for ease of manufacture without destruction of the ptfe hollow fibers, with high packing densities, and without the processing complexity of pre-melting, extruding, or chemical crosslinking of any polymeric adhesives.
02/13/14
20140041506
Coated musical instrument string
Disclosed is a method for making a coated musical instrument string comprising plating a musical instrument string in a composite electroless plating bath at a specified bath temperature for a specified bath time to create a coated musical instrument string to create wound musical instrument string. The musical instrument string may be plain wire or wound wire made of copper and or steel alloys.
02/06/14
20140034315
Radial conduit cutting system and method
What is presented is a metal magnalium thermite pellet that is used to create heated gas. The metal magnalium thermite pellet is made to be inserted into the cutting apparatus that is used for cutting a conduit for oil, gas, mining, and underwater pressure sealed tool applications.
01/30/14
20140031461
Fluororubber composition
A fluororubber composition comprising 100 parts by weight of a peroxide-crosslinkable tetrafluoroethylene-vinylidene fluoride-hexafluoropropene ternary copolymer rubber having a fluorine content of 64 wt. % or more, (a) 5 to 90 parts by weight of carbon black having a specific surface area of 5 to 20 m2/g, (b) 5 to 40 parts by weight of a fine bituminous powder, (c) at least one of 1 to 20 parts by weight of hydrophilicity-imparted talc and/or 1 to 30 parts by weight of hydrophilicity-imparted clay, and (d) 0.5 to 6 parts by weight of an organic peroxide; the fluororubber composition being used as a molding material for fuel oil sealing materials to be in contact with fuel oil.
01/23/14
20140024563
Anti-wear coatings for compressor wear surfaces
Anti-wear surface coatings and methods for making them are provided. Such anti-wear surface coatings are particularly suitable for use in a compressor, such as a scroll or rotary compressor.
01/23/14
20140023895
Gas-permeable filter provided with oil repellency
A gas-permeable filter provided with oil repellency is provided. The gas-permeable filter includes a porous membrane having a surface coated with an oil-repellent agent.
01/23/14
20140023540
Anti-wear coatings for scroll compressor wear surfaces
Anti-wear surface coatings and methods for making them are provided. Such anti-wear surface coatings are particularly suitable for use in a compressor, such as a scroll compressor.
01/02/14
20140001664
Matrix band for dental applications
A matrix band for dental applications including a base material and a coating. The base material has an outer surface and a tooth contact surface as well as a perimeter.
01/02/14
20140000229
Composite microporous filter material
The composite microporour filter material comprises a base-cloth layer, an upper adhesion layer attached to a top side of the base-cloth layer, and a lower adhesion layer attached to a bottom side of the base-cloth layer. The base-cloth layer is made of either polymide yarn base-cloth, polysulfoneamide yarn base-cloth, or polytetrafluoroethylene filament base-cloth.
12/26/13
20130340761
Respiratory mask having gas washout vent and gas washout vent assembly for a respiratory mask
The present invention provides a vent assembly suitable for use with a respiratory mask of the type used in cpap treatment. In one embodiment the vent is made of a thin air permeable membrane.


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Tetrafluoroethylene topics: Tetrafluoroethylene, Tetrafluoro, Polytetrafluoroethylene, Homogeneous, Fluoropolymer, Gel Formulation, Carbon Film, Fragmentation, Silicon Wafer, High Density, Polyurethane, Vinyl Ether, Inkjet Printer, Dispersant, Surfactant

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