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| Number | Title | Issue Date |
| 8158041 | Radially expandable polytetrafluoroethylene Extruded, stretched, sintered tubular PTFE materials are produced which are suited for use in the medical field as liners and covers for expandable stents. The PTFE materials have an unusually low REC (Radial Expansion Coefficient) and RER (Radial Expansion Ratio). | 04/17/2012 |
| 8153041 | Crystalline polymer microporous membrane, method for producing same, and filter for filtration To provide a membrane capable of efficiently collecting fine particles for a long period of time, disclosed is a polytetrafluoroethylene microporous membrane wherein the mean pore size in the surface of the membrane is larger than the mean pore size in the back ther... | 04/10/2012 |
| 8007700 | Coaxial cable of low dielectric constant, and a fabrication method and tool therefor An electric cable for conveying signals, the cable having a diameter of less than 2 mm and comprising at least one conductor in an insulating sheath, the sheath having a dielectric constant ε of less than 1.7. To achieve this, the sheath is made of PTFE and it incl... | 08/30/2011 |
| 7985361 | Spinning low fluorosurfactant fluoropolymer dispersions A process for dispersion spinning non-melt-processible fluoropolymer fiber in which a mixture of an aqueous dispersion of non-melt-processible polytetrafluoroethylene or modified polytetrafluoroethylene fluoropolymer particles and an aqueous solution of matrix polym... | 07/26/2011 |
| 7976751 | Expanded porous polytetrafluoroethylene film having elastic recovery property in thickness-wise direction of the film, production process thereof, and use of the porous film An expanded porous polytetrafluoroethylene film having residual strain of at most 11.0% as measured after a load required to indent a rod, which is in a columnar form that its outer diameter is at least 2 mm and at least 1.9 times as much as the thickness of the fil... | 07/12/2011 |
| 7927525 | Vacuum isostatic micro molding of micro/nano structures and micro transfer metal films into PTFE and PTFE compounds A process of manufacturing micro or nanostructure surfaces or parts formed of PTFE by applying a vacuum to powered or granulated PTFE in a heated compression mold. The process further includes applying a compression anvil within the metallic mold, removing the mold ... | 04/19/2011 |
| 7811490 | Boron nitride filled PTFE A composition is provided that, in one aspect, may be used in the production of sealing materials, such as gaskets. The composition includes a polytetraflouroethylene matrix and a Boron Nitride filler. In one aspect, the Boron Nitride filler may be provided as a hex... | 10/12/2010 |
| 7744792 | Methods for continuous processing polytetrafluoroethylene (PTFE) resin The subject invention pertains to methods for processing polytetrafluoroethylene (PTFE) resin into highly desirable product forms that fill the needs of the fluoropolymer industry. The subject invention concerns methods for making a multi-directional planar oriented... | 06/29/2010 |
| 7691299 | Process for production of expanded polytetrafluoroetylene products Disclosed are expanded polytetrafluoroethylene products, such as porous polytetrafluoroethylene tubes, having high axial tear strength and a process for their production. Each expanded polytetrafluoroethylene product has a microstructure, which comprises fibrils and... | 04/06/2010 |
| 7390448 | Spinning low fluorosurfactant fluoropolymer dispersions A process for dispersion spinning non-melt-processible fluoropolymer fiber in which a mixture of an aqueous dispersion of non-melt-processible polytetrafluoroethylene or modified polytetrafluoroethylene fluoropolymer particles and an aqueous solution of matrix polym... | 06/24/2008 |
| 7371786 | Coating composition, coating formed therefrom, anti-reflection coating, anti-reflection film, and image display device The present invention provides a coating composition capable of forming a fluorine-containing coating layer having a low refractive index and a high hardness, a coating layer formed by using the coating composition, an anti-reflecting layer using the coating layer a... | 05/13/2008 |
| 7347960 | Dispersion spinning core-shell fluoropolymers A process is disclosed for dispersion spinning non-melt-processible fluoropolymer fiber in which a mixture of an aqueous dispersion of non-melt-processible fluoropolymer particles and an aqueous solution of a matrix polymer is formed. The non-melt-processible fluoro... | 03/25/2008 |
| 7291696 | Composition and associated method Provided is a fluorine substituted oligomeric or polymeric ester including the reaction product of a fluorine substituted acrylate or a fluorine substituted methacrylate; an unsaturated anhydride; and an alkyl acrylate or an alkyl methacrylate. Also provided is a me... | 11/06/2007 |
| 7276788 | Hydrophobic foamed insulators for high density circuits A conductive system and a method of forming an insulator for use in the conductive system is disclosed. The conductive system comprises a foamed polymer layer on a substrate. The foamed polymer layer has a surface that is hydrophobic, and a plurality of conductive s... | 10/02/2007 |
| 7238311 | Aerogel/PTFE composite insulating material A material comprising aerogel particles and a polytetrafluoroethylene (PTFE) binder is formed having a thermal conductivity of less than or equal to 25 mW/m K at atmospheric conditions. The material is moldable or formable, having little or no shedding of filler par... | 07/03/2007 |
| 7226969 | Aerogel/PTFE composite insulating material A material comprising aerogel particles and a polytetrafluoroethylene (PTFE) binder is formed having a thermal conductivity of less than or equal to 25 mW/m K at atmospheric conditions. The material is moldable or formable, having little or no shedding of filler par... | 06/05/2007 |
| 7217314 | Venting system for minimizing condensation in a lighting assembly In one aspect, the invention is a lighting assembly comprising a housing defining an internal space within the housing, and an ambient space surrounding the housing, a light source within the internal space; a high capacity desiccant within the internal space, the h... | 05/15/2007 |
| 7211210 | Dry fibrillated PTFE film and its method of manufacture A finished PTFE film is produced by first preparing an extruded, dried, unsintered and unexpanded PTFE feed film, and then reducing the thickness of the feed film by more than 20% by passing it with back tension through a roll nip. ... | 05/01/2007 |
| 7173094 | Moldings of fluororubbers and process for their production Moldings of fluoro rubbers produced by crosslinking a tetrafluoroethylene/propylene copolymer or a tetrafluoroethylene/propylene/vinylidene fluoride copolymer, which have metal contents of 1.5% by mass or below in terms of metal elements and are suitable for use app... | 02/06/2007 |
| 7147378 | Low friction, abrasion-resistant bearing materials A friction-reducing abrasion resistant bearing material is described. The material comprises a monolithic, porous polytetrafluoroethylene (ePTFE) having dispersed therein a wear-resistant thermosetting or thermoplastic resin material. ... | 12/12/2006 |
| 7147957 | Electrode for fuel cell and manufacturing method therefor In an electrode for a fuel cell, a catalyst layer contains a solid polymer electrolyte, catalyst particles and porous polymer. The porous polymer is provided for the inside portions of pores of said catalyst layer and/or the surface of said catalyst layer. ... | 12/12/2006 |
| 7128862 | Biaxially oriented multilayer polymer tube for medical devices A tubular extruded member particularly suitable for use in medical devices such as intravascular catheters and guide wires, wherein the extruded tubular member includes multiple layers having biaxial helical orientation in different directions. A counter-rotation ex... | 10/31/2006 |
| 7114751 | Composite liner for oilfield tubular goods A composite lined tube is disclosed having end couplings. The tube includes a resin impregnated fiber preform pressed progressively along an inner wall of the tube. The tube may further include an inflatable bladder inserted into the tube. The bladder is adapted to ... | 10/03/2006 |
| 7077891 | Adsorbent sheet material for parallel passage contactors An adsorbent material fabricated into a reinforcement-free, self-supported coherent thin sheet and configured for use as a parallel passage contactor element in adsorption/separation applications with gases and liquids is disclosed. The adsorbent sheet material is o... | 07/18/2006 |
| 7060210 | Method of processing colloidal size polytetrafluoroethylene resin particles to produce biaxially-oriented structures This invention involves forward integration of the art paste extrusion process by adding a step to the processing sequence to change the uniaxially-oriented art form to a desirable planar biaxially-oriented form. This invention also involves the backward integration... | 06/13/2006 |
| 7049380 | Thermoplastic copolymer of tetrafluoroethylene and perfluoromethyl vinyl ether and medical devices employing the copolymer An improved elastomeric material is described comprising an essentially noncross-linkable amorphous copolymer of tetrafluoroethylene (TFE) and perfluoromethyl vinyl ether (PMVE) which is both a thermoplastic and exhibits exceptional mechanical properties. This mater... | 05/23/2006 |
| 7033529 | Plain bearing provided with a friction coating and method for making same A high-performance plain bearing provided with a friction coating including a bronze layer whereof the pores are filled with a PTFE-type fluoroplastic paste filled with molybdenum bisulphide. The production method includes sintering a layer of bronze powder on the m... | 04/25/2006 |
| 6997235 | Plasticizing barrel lined on the inside with a coating, and method of making such a plasticizing barrel A plasticizing barrel for a plastics processing machine includes a body having a hollow cylindrical configuration and defining an axis; and a coating formed on an inner wall surface of the body and including at least one groove extending in axial direction of the bo... | 02/14/2006 |
| 6979848 | Memory system with conductive structures embedded in foamed insulator A conductive system and a method of forming an insulator for use in the conductive system is disclosed. The conductive system comprises a foamed polymer layer on a substrate. The foamed polymer layer has a surface that is hydrophobic, and a plurality of conductive s... | 12/27/2005 |
| 6953983 | Low dielectric constant STI with SOI devices Techniques of shallow trench isolation and devices produced therefrom are shown. The techniques of shallow trench isolation utilize foamed polymers, cured aerogels or air gaps as the insulation medium. Such techniques facilitate lower dielectric constants than the s... | 10/11/2005 |
| 6948264 | Non-clogging sole for article of footwear The present invention teaches an article of footwear having a non-clogging for use on natural grass and also artificial turf surfaces. A preferred sole can include protrusions comprising a hydrophobic material having a wettability index equal to or greater than 90 d... | 09/27/2005 |
| 6947258 | UV curable and electrically conductive adhesive for bonding magnetic disk drive components An electrically conductive adhesive includes a resin component, a photoinitiator, and metal-coated polymer beads. The beads have an average diameter and a very narrow size distribution around the average diameter. The adhesive is applied between a read/write head an... | 09/20/2005 |
| 6946204 | Paper/film composite structure and making method In a paper/film composite structure, the film is made of a low substituted cellulose ether having a molar degree of substitution with alkyl and/or hydroxyalkyl groups in the range of 0.05 to 1.3. The paper/film composite structure can be delivered to the waste paper... | 09/20/2005 |
| 6942824 | UV curable and electrically conductive adhesive for bonding magnetic disk drive components An electrically conductive adhesive includes a resin component, a photoinitiator, and metal-coated polymer beads. The beads have an average diameter and a very narrow size distribution around the average diameter. The adhesive is applied between a read/write head an... | 09/13/2005 |
| 6932187 | Protective acoustic cover assembly A protective acoustic cover assembly including a metal foil with perforations, and a treatment on one or more surfaces of said metal foil. The treatment is a hydrophobic or oleophobic treatment, or both. The protective acoustic cover assembly has an average specific... | 08/23/2005 |
| 6929768 | Method of making a catheter balloon by laser fusing wrapped material A method of making a catheter balloon or other expandable medical device, and a balloon or other device formed thereby, in which at least a portion of a tubular, wrapped sheet of polymeric material is heated with laser radiation to form a fused seam extending along ... | 08/16/2005 |
| 6899932 | Polytetrafluoroethylene molded product in block form and method for production thereof A block-shaped baked molded article having little block deformation amount is obtained in order to reduce a loss of materials until a stable film or sheet can be cut from a block-shaped molded article. After a polytetrafluoroethylene powder is compression-molded to ... | 05/31/2005 |
| 6890395 | Medical device formed of ultrahigh molecular weight polyolefin Medical devices having at least a component, such as a catheter balloon, stent cover and vascular graft, formed of ultrahigh molecular weight polyolefin, such as ultrahigh molecular weight polyethylene. The device component is formed from ultrahigh molecular weight ... | 05/10/2005 |
| 6878320 | Auxetic materials An auxetic polymeric material is manufactured in a filamentary or fibrous form. The auxetic polymeric material has a negative Poisson ratio so that it has the property of expanding or contracting transversely to a direction in which it is extended or compressed. The... | 04/12/2005 |
| 6863852 | Fluoropolymer extrusions based on novel combinations of process parameters and clay minerals A process for extruding of products from fluoropolymers preferably shaped as rods or tubes which have unique physical and other properties resulting from the addition of nanoparticles under unique processing conditions while also utilizing accurate control of proces... | 03/08/2005 |
