Composite Patents (Class 428/924)
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Patent number: 11935779Abstract: Various example embodiments provide a transfer hand for transferring a substrate. The transfer hand for transferring the substrate comprises: a body; and a vacuum assembly installed in the body and providing decompression to the bottom surface of a substrate to support the substrate at the upper part of the body; wherein the vacuum assembly comprises: an vacuum pad with conductivity contacting the substrate; and a sealing member provided between the vacuum pad and the body, the sealing member electrically connected to the vacuum pad; wherein the sealing member is grounded.Type: GrantFiled: October 28, 2021Date of Patent: March 19, 2024Assignee: SEMES CO., LTD.Inventors: Tae Hoon Lee, Ju Won Kim, Jin Sung Sun, Bo Hee Lee
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Patent number: 7470380Abstract: A conductive composition consisting essentially of (a) 50-95 wt % finely divided particles of an electrically-conductive material dispersed in (b) a liquid vehicle, for use in the manufacture of an electrically-conductive pattern on a substrate for the use of reducing cross-sectional area and width while retaining conductivity and resistivity.Type: GrantFiled: March 23, 2004Date of Patent: December 30, 2008Assignee: E.I. Du Pont De Nemours and CompanyInventor: Sarah Jane Mears
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Patent number: 7169477Abstract: The present invention provides a composition for preparing porous dielectric thin films containing pore-generating material, said composition comprising gemini detergent, and/or a quaternary alkyl ammonium salt, a thermo-stable organic or inorganic matrix precursor, and solvent for dissolving the two solid components. There is also provided an interlayer insulating film having good mechanical properties such as hardness, modulus and hydroscopicity, which is required for semiconductor devices.Type: GrantFiled: December 2, 2003Date of Patent: January 30, 2007Assignee: Samsung Electronics Co., Ltd.Inventors: Yi Yeol Lyu, Kwang Hee Lee, Ji Man Kim, Seok Chang, Jin Heong Yim, Jae Geun Park
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Patent number: 7118693Abstract: The invention is directed to conformal coatings that provide excellent shielding against electromagnetic interference (EMI). A conformal coating comprises an insulating layer and a conducting layer containing electrically conductive material. The insulating layer comprises materials for protecting a coated object. The conducting layer comprises materials that provide EMI shielding such as carbon black, carbon buckeyballs, carbon nanotubes, chemically-modified carbon nanotubes and combinations thereof. The insulating layer and the conductive layer may be the same or different, and may be applied to an object simultaneously or sequentially. Accordingly, the invention is also directed to objects that are partially or completely coated with a conformal coating that provides EMI shielding.Type: GrantFiled: July 24, 2002Date of Patent: October 10, 2006Assignee: Eikos, Inc.Inventors: Paul J. Glatkowski, Nelson Landrau, David H. Landis, Jr., Joseph W. Piche, Jeffrey L. Conroy
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Patent number: 7048994Abstract: A laminated polyester film excellent in blocking resistance and processing suitability and exhibiting excellent electromagnetic transducing characteristics and excellent travel durability, when processed into a magnetic recording medium, and an electromagnetic recording medium using the laminated polyester film as a base film, are provided. This laminated polyester film comprises a polyester layer B containing a cyclic trimer in an amount of not more than 0.8 percent by weight, having a terminal carboxyl group concentration of not more than 35 eq/106 g and containing inactive particles B having an average particle diameter of 50 to 100 nm, and a polyester layer A laminated to one side of the polyester layer B and not containing inactive particles or containing inactive particles A having a smaller average particle diameter than that of the inactive particles B.Type: GrantFiled: February 20, 2002Date of Patent: May 23, 2006Assignee: Teijin LimitedInventors: Masahiko Kosuge, Hirofumi Murooka, Takeshi Ishida
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Patent number: 6991855Abstract: Reactive foils and their uses are provided as localized heat sources useful, for example, in ignition, joining and propulsion. An improved reactive foil is preferably a freestanding multilayered foil structure made up of alternating layers selected from materials that will react with one another in an exothermic and self-propagating reaction. Upon reacting, this foil supplies highly localized heat energy that may be applied, for example, to joining layers, or directly to bulk materials that are to be joined. This foil heat-source allows rapid bonding to occur at room temperature in virtually any environment (e.g., air, vacuum, water, etc.). If a joining material is used, the foil reaction will supply enough heat to melt the joining materials, which upon cooling will form a strong bond, joining two or more bulk materials.Type: GrantFiled: January 21, 2004Date of Patent: January 31, 2006Assignee: Johns Hopkins UniversityInventors: Timothy P. Weihs, Omar Knio, Michael Reiss, David van Heerden
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Patent number: 6986929Abstract: A structural panel comprised of a composite preform having an electrically conductive stitching. The stitching forms an electrically conductive grid-like network on the structural panel to better dissipate electrical energy received in a lightning strike throughout at least a portion of the thickness of the composite preform. Advantageously, the electrically conductive stitching is applied to the composite preform during the primary manufacturing process, rather than in a subsequent manufacturing step, to thereby help reduce the overall manufacturing cost of the structural panel. In one alternative embodiment a non-conductive polymer stitching is also applied throughout the entire thickness of the composite preform.Type: GrantFiled: October 14, 2003Date of Patent: January 17, 2006Assignee: The Boeing CompanyInventor: Thomas Karl Tsotsis
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Patent number: 6953627Abstract: A process for the production of thin walled parts of steel, wherein there are layers that are at least partly differently treatable relating to their strength and hardness qualities. This process can include creating a composite material from a plurality of different layers by connecting at least one core layer and at least one surface layer together. At least one layer of the core or surface layer is cast adjacent to another layer to form a composite material having an alloy gradient that is flat at each interface between any of the core layer or the surface layer. Next, the process can include deforming the composite material along a length of these layers. Finally the process can include heat treating the layers to transform the strength and hardness qualities of at least one of these layers.Type: GrantFiled: January 5, 2001Date of Patent: October 11, 2005Assignee: C.D. Walzholz-Brockhaus GmbHInventor: Hans-Toni Junius
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Patent number: 6911267Abstract: The present invention is directed to a brazing sheet comprising an aluminum 3xxx series core alloy wherein at least one side thereof is provided with an aluminum clad material comprising from 0.7-2.0% Mn and 0.7-3.0.0% Zn, wherein the clad is capable of being used as an Inner-liner of a heat exchange product. In one embodiment one side of the core alloy is provided a material that comprises from 0.7-2.0% Mn and 0.7-3.0% Zn and the other side of the core is provided with an aluminum alloy comprising at least 5.5% Si. Thee are further provided methods for preparing brazing sheets as described herein as well as methods for use of brazing sheet materials including as tube stock and as heat exchangers, as well as other applications.Type: GrantFiled: September 10, 2003Date of Patent: June 28, 2005Assignee: Pechiney Rolled ProductsInventors: H. Scott Goodrich, Scott L. Palmer, Gregory R. Johnson, Zayna M. Connor
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Patent number: 6863992Abstract: Reactive foils and their uses are provided as localized heat sources useful, for example, in ignition, joining and propulsion. An improved reactive foil is preferably a freestanding multilayered foil structure made up of alternating layers selected from materials that will react with one another in an exothermic and self-propagating reaction. Upon reacting, this foil supplies highly localized heat energy that may be applied, for example, to joining layers, or directly to bulk materials that are to be joined. This foil heat-source allows rapid bonding to occur at room temperature in virtually any environment (e.g., air, vacuum, water, etc.). If a joining material is used, the foil reaction will supply enough heat to melt the joining materials, which upon cooling will form a strong bond, joining two or more bulk materials.Type: GrantFiled: January 21, 2004Date of Patent: March 8, 2005Assignee: Johns Hopkins UniversityInventors: Timothy P. Weihs, Omar Knio, Michael Reiss, David van Heerden
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Patent number: 6827991Abstract: A transparent molded plastic article, which is used for, for example, a component of an auto instrument, includes a transparent molded plastic body and a surfactant layer, which is located on a surface of the plastic body. The surfactant layer contains a quaternary ammonium salt having a mean molecular weight of 260 to 385 to eliminate static electricity of the plastic body. Therefore, the transparent molded plastic article is substantially static-electricity-free while the deterioration in transparency of the surfactant is prevented.Type: GrantFiled: October 16, 2002Date of Patent: December 7, 2004Assignee: Denso CorporationInventor: Takashi Hiraiwa
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Patent number: 6794012Abstract: A structural panel comprised of a composite preform having an electrically conductive stitching. The stitching forms an electrically conductive grid-like network on the structural panel to better dissipate electrical energy received in a lightning strike throughout at least a portion of the thickness of the composite preform. Advantageously, the electrically conductive stitching is applied to the composite preform during the primary manufacturing process, rather than in a subsequent manufacturing step, to thereby help reduce the overall manufacturing cost of the structural panel. In one alternative embodiment a non-conductive polymer stitching is also applied throughout the entire thickness of the composite preform.Type: GrantFiled: September 5, 2002Date of Patent: September 21, 2004Assignee: The Boeing CompanyInventor: Thomas Karl Tsotsis
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Patent number: 6730401Abstract: A multi-layer structure comprises at least one electrostatic dissipative outer layer and a conductive core layer. The outer layer comprises a material selected from the group consisting of an inherently dissipative polymer, an inherently dissipative polymer blended with a non-conductive matrix polymer, an inherently conductive polymer blended with a non-conductive matrix polymer in an amount sufficient to impart a surface resistivity of greater than 105 and less than 1012 ohms/square, and mixtures thereof. The core layer comprises a material selected from the group consisting of an inherently conductive polymer, an inherently conductive polymer blended with a non-conductive matrix polymer, a conductive filler blended with a non-conductive matrix polymer, and mixtures thereof.Type: GrantFiled: July 9, 2001Date of Patent: May 4, 2004Assignee: Eastman Chemical CompanyInventors: William Carl Jackson, Douglas Stephens McWilliams
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Patent number: 6670030Abstract: A biaxially oriented laminate polyester film for magnetic recording medium, which is a laminate film comprising a base layer (A) formed of a polyester resin and a coating layer (B) which exists on one surface of the base layer (A) and contains a binder resin, added fine particles and a surfactant, wherein the base layer (A) is a biaxially oriented film which substantially contains no fine particles added or contains 0.001 to 0.1% by weight of added fine particles having an average particle diameter of 0.005 to 0.3 &mgr;m, the coating layer (B) has a surface having a central plane roughness (SRa) of 5 nm or less, the surface of the coating layer (B) has protrusions having a major diameter of 0.05 &mgr;m or more in a density of 80,000 pieces/mm2 or less and has extra-large protrusions having a major diameter of 10 &mgr;m or more in a density of 20 pieces/cm2 or less.Type: GrantFiled: July 3, 2000Date of Patent: December 30, 2003Assignee: Teijin LimitedInventors: Toshikazu Uchida, Mitsuo Tojo, Toshifumi Osawa, Akira Kameoka, Tomokatsu Ura, Masahiko Kosuge
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Patent number: 6667115Abstract: The present invention is directed to a brazing sheet comprising an aluminum 3xxx series core alloy, wherein at least one side thereof is provided with an aluminum clad material comprising 0.7-2.0% Mn and 0.7-3.0% Zn, wherein the clad is capable of being used as an inner-liner of a heat exchanger product. In one embodiment, one side of the core alloy is provided with a material that comprises 0.7-2.0% Mn and 0.7-3.0% Zn and the other side of the core is provided with an aluminum alloy comprising at least 5.5% Si. There are further provided methods for preparing brazing sheets as described herein as well as methods for use of brazing sheet materials including as tube stock and as heat exchangers, as well as other applications.Type: GrantFiled: January 16, 2002Date of Patent: December 23, 2003Assignee: Pechiney Rolled ProductsInventors: H. Scott Goodrich, Scott L. Palmer, Gregory R. Johnson, Zayna M. Connor
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Patent number: 6635360Abstract: A brazing sheet comprises a thin covering material and a core material as well as an Al—Si alloy brazing material inserted between the thin covering material and the core material. The brazing material further contains Mg, Bi and/or Zn, Sn, In. When the above brazing material is molten in an inert gas atmosphere, this molten brazing material seeps onto the surface of the above thin covering material, whereby the brazing sheet is fluxlessly brazed to joint materials.Type: GrantFiled: October 26, 2001Date of Patent: October 21, 2003Assignee: Sky Aluminum Co., Ltd.Inventors: Shinji Takeno, Nobuyuki Kakimoto
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Patent number: 6558581Abstract: A transparent electro-conductive structure comprising a transparent substrate and formed successively thereon a transparent electro-conductive layer and a transparent coat layer, which is used in, e.g., front panels of display devices such as CRTs. The transparent electro-conductive layer is composed chiefly of i) noble-metal-coated fine silver particles having an average particle diameter of from 1 nm to 100 nm, the fine silver particles being surface-coated with gold or platinum alone or a composite of gold and platinum, and ii) a binder matrix. A transparent electro-conductive layer forming coating fluid used in the production of this transparent conductive structure comprises a solvent and noble-metal-coated fine silver particles dispersed in the solvent and having an average particle diameter of from 1 nm to 100 nm, the fine silver particles being surface-coated with gold or platinum alone or a composite of gold and platinum.Type: GrantFiled: May 31, 2001Date of Patent: May 6, 2003Assignee: Sumitomo Metal Mining Co., Ltd.Inventors: Masaya Yukinobu, Kenji Kato
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Patent number: 6465113Abstract: An aluminum alloy brazing sheet having a four-layered structure, of sheet thickness 0.2 mm or less, and having a core alloy, a filler alloy of an Al—Si alloy on one surface of the core alloy, a sacrificial anode material of an Al—Zn alloy on the other surface of the core alloy, and an intermediate layer between the core alloy and sacrificial anode material, wherein the core alloy is composed of an Al alloy containing given amounts of Si, Fe, Mn, and Cu, with the balance being made of Al and unavoidable impurities, and wherein the intermediate layer is composed of an Al alloy containing given amounts of Si, Fe, Mn, and Cu, with the balance being made of Al and unavoidable impurities.Type: GrantFiled: August 9, 2001Date of Patent: October 15, 2002Assignees: The Furukawa Electric Company, Ltd., Denso CorporationInventors: Noriyuki Yamada, Takeyoshi Doko, Yoshiaki Ogiwara, Satoshi Tanaka, Sunao Fukuda, Yoshihiko Kamiya, Masaki Shimizu, Kenji Negura
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Patent number: 6447927Abstract: A composite metal matrix formed of polycrystalline &agr;-Al2O3 fibers encapsulated within a matrix of substantially pure elemental aluminum, or an alloy elemental aluminum and up to about 2% copper is disclosed. The resulting materials are characterized by their high strength and low weight are particularly well suited for applications in various industries including high voltage power transmission.Type: GrantFiled: March 20, 2000Date of Patent: September 10, 2002Assignee: 3M Innovative Properties CompanyInventors: Colin McCullough, Andreas Mortensen, Paul S. Werner, Herve E. Deve, Tracy L. Anderson
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Patent number: 6436520Abstract: A magnetic display sheet of the present invention comprises: a magnet sheet having a magnetized surface, and a non-magnetized surface, which magnet sheet comprises: 400 to 1,900 parts by weight of at least one kind of magnetic particles selected from the group consisting of magnetoplumbite-structure ferrite particles and rare-earth magnet particles, as a filler, and 100 parts by weight of a binder comprising 50 to 95% by weight of at least one thermoplastic elastomer selected from the group consisting of a styrene-isoprene-styrene block copolymer resin, a styrene-ethylene.butylene-styrene block copolymer resin and an ethylene-propylene copolymer rubber, and 5 to 50% by weight of at least one soft polyolefin selected from the group consisting of a propylene homopolymer and a propylene-ethylene copolymer; and a printing paper sheet for being printed on, said paper sheet being bonded to said non-magnetized surface of said magnet sheet.Type: GrantFiled: September 1, 2000Date of Patent: August 20, 2002Assignee: Toda Kogyo CorporationInventor: Kazumi Yamamoto
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Patent number: 6398985Abstract: A transparent electro-conductive structure comprising a transparent substrate and formed successively thereon a transparent electro-conductive layer and a transparent coat layer, which is used in, e.g., front panels of display devices such as CRTs. The transparent electro-conductive layer is composed chiefly of i) noble-metal-coated fine silver particles having an average particle diameter of from 1 nm to 100 nm, the fine silver particles being surface-coated with gold or platinum alone or a composite of gold and platinum, and ii) a binder matrix. A transparent electro-conductive layer forming coating fluid used in the production of this transparent conductive structure comprises a solvent and noble-metal-coated fine silver particles dispersed in the solvent and having an average particle diameter of from 1 nm to 100 nm, the fine silver particles being surface-coated with gold or platinum alone or a composite of gold and platinum.Type: GrantFiled: May 31, 2001Date of Patent: June 4, 2002Assignee: Sumitomo Metal Mining Co., Ltd.Inventors: Masaya Yukinobu, Kenji Kato
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Patent number: 6376057Abstract: This invention provides a packaging material for a photographic photosensitive material having a conductive light-shielding thermoplastic resin film layer which comprises a resin composition comprising 3 to 49 wt. % of a thermoplastic elastomer having a crystallinity of 40% or less measured by the X-ray diffraction method, 0.01 to 10 wt. % of lubricant, and 1 to 70 wt. % of carbon black which is acetylene carbon black or furnace carbon black, which is excellent in the dispersion of carbon black to improve light-shielding ability and rare generation of lumps and microgrits, heat sealing properties, small degradation of physical strength, film moldability, etc.Type: GrantFiled: November 19, 1999Date of Patent: April 23, 2002Assignee: Fuji Photo Film, Co., Ltd.Inventors: Mutsuo Akao, Hideyuki Sugimoto, Masaaki Fujiyama
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Patent number: 6372364Abstract: A thin film product having a nanostructured surface, a laminate product including the thin film and a temporary substrate opposite the nanostructured surface, a laminate product including the thin film and a final substrate attached to the nanostructured surface and a method of producing the thin film products. The thin film is particularly useful in the electronics industry for the production of integrated circuits, printed circuit boards and EMF shielding. The nanostructured surface includes surface features that are mostly smaller than one micron, while the dense portion of the thin film is between 10-1000 nm. The thin film is produced by coating a temporary substrate (such as aluminum foil) with a coating material (such as copper) using any process. One such method is concentrated heat deposition or a combustion, chemical vapor deposition process.Type: GrantFiled: August 18, 1999Date of Patent: April 16, 2002Assignee: MicroCoating Technologies, Inc.Inventors: Andrew T. Hunt, Henry A. Luten, III
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Patent number: 6329080Abstract: An object of the present invention is to provide a three-layer clad material in which stainless steel is used as the substrate, Ni or an Ni alloy is monolithically pressure-welded to either principal plane of the substrate, and Cu is monolithically pressure-welded to the other principal plane, or a two- or three-layer clad material in which Ni or an Ni alloy is monolithically pressure-welded to at least one principal plane of the substrate, wherein this high-strength, high-drawability clad material allows the thickness ratio of the stainless steel to be further increased, mechanical strength (tensile strength) to be raised above that of a conventional two- or three-layer clad material, and the thickness of the entire clad material to be reduced.Type: GrantFiled: June 29, 2001Date of Patent: December 11, 2001Assignee: Sumitomo Special Metals Co., Ltd.Inventor: Masaaki Ishio
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Patent number: 6316128Abstract: A three-layer clad material in which stainless steel is used as the substrate, Ni or an Ni alloy is monolithically pressure-welded to either principal plane of the substrate, and Cu is monolithically pressure-welded to the other principal plane, wherein this high-strength, high-drawability clad material allows the thickness ratio of the stainless steel to be further increased, mechanical strength (tensile strength) to be raised above that of a conventional two- or three-layer clad material, and the thickness of the entire clad material to be reduced. Uniform tension can be created across the entire thin sheet, folding or creasing can be prevented from occurring during pressure welding, the thickness of the thin Ni and Cu sheets prior to pressure welding can be reduced to about 5 &mgr;m, and the thickness ratio of each of the thin sheets in the three-layer clad material for cell cases can be reduced to about 0.Type: GrantFiled: January 28, 2000Date of Patent: November 13, 2001Assignee: Sumitomo Special Metals Co., Ltd.Inventor: Masaaki Ishio
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Patent number: 6303237Abstract: A compound tube including a layer of a Fe—Cr alloy and a layer of load-carrying component, with the optional addition of further layers. The Fe—Cr alloy preferably has a composition including, in weight-%: less than 0.3% carbon, 15-60% chromium, less than 10% nickel, less than 5% molybdenum, less than 5% silicon, less than 0.3% nitrogen, less than 5% manganese, and the remainder iron with naturally occurring impurities. The compound tubes are very resistant to carbonization and metal dusting, and are suited for use as bayonet tubing, superheater tubing, and reforming tubing in steam formation environments.Type: GrantFiled: March 17, 2000Date of Patent: October 16, 2001Assignee: Sandvik ABInventors: Urban Forsberg, Johan Lindén
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Patent number: 6296953Abstract: A compound tube comprises a layer of a Fe—Cr—Al-alloy and a layer of a load-carrying component and optionally one or several additional layers. The Fe—Cr—Al-alloy has the following analysis in weight-%: carbon<0.3, chromium 5-30, nickel<10, manganese<5, molybdenum<5, aluminium 3-20 , silicon<5, nitrogen<0.3, cerium+bafnium+yttrium<1.0, titanium 0.005-1.0, zirconium 0.005-1.0, niobium 0.005-1.0, the remainder iron, and naturally occurring impurities. These tubes are very resistant towards carbonization and “metal dusting” and are being used to advantage for bayonet tubing, superheat tubing and reformer tubing in steam formation.Type: GrantFiled: April 6, 2000Date of Patent: October 2, 2001Assignee: Sandvik ABInventors: Johan Lindén, Urban Forsberg
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Patent number: 6214450Abstract: A high solids, water-borne coating comprises a latex polymer, non-film-forming particulates and water. The high solids coating contains up to 90% solids (non-volatiles/volume) and pigment volume concentration (PVC) that can range between about 5% to 95%. The thick-coverage surface coating herein dries at a fast rate, provides excellent through-dry properties as measured by tensile, elongation, and water resistance, and can replace traditional coatings used in multi-coat processes. The coating herein can contain up to about 40% hollow microspheres to yield a dried coating that has up to about 57% PVC and be used as a roof coating that meets a required elongation of at least 200%.Type: GrantFiled: February 25, 1998Date of Patent: April 10, 2001Assignee: Tremco IncorporatedInventors: Frank A. Wickert, Donald C. Portfolio, Steven J. Conway, Gregory P. Bidinger, Stephen R. Peters, Jr.
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Patent number: 6068938Abstract: An Mg based article excellent in plating adhesion which is produced with an Mg alloy base material regardless of its kind by forming a Zn layer of an average thickness of 0.60 .mu.m or more, or a Zn deposition of 0.43 mg/cm.sup.2 or more formed on the Mg alloy base material and a method of producing the article with good efficiency are provided.Type: GrantFiled: April 14, 1998Date of Patent: May 30, 2000Assignee: Kabushiki Kaisha Kobe Seiko ShoInventors: Jun Kato, Wataru Urushihara, Takenori Nakayama
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Patent number: 6060172Abstract: The present invention relates to a rapidly quenched metal strip used as a core material for transformers, magnetic shields, choke coils, etc., and to an Fe-based rapidly quenched metal strip having a strip thickness exceeding 20 .mu.m and up to 70 .mu.m, wherein nonmetallic inclusions contained in said metal strip have a maximum particle size up to 50% of the strip thickness, and densities of the nonmetallic inclusions are up to 10 nonmetallic inclusions/mm.sup.3 for nonmetallic inclusions having a particle size exceeding 10 .mu.m and up to 50% of the strip thickness, up to 3.times.10.sup.3 nonmetallic inclusions/mm.sup.3 for nonmetallic inclusions having a particle size of at least 3 .mu.m to up to 10 .mu.m, and up to 5.times.10.sup.5 nonmetallic inclusions/mm.sup.3 for nonmetallic inclusions having a particle size of at least 0.3 .mu.m to less than 3 .mu.m, and showing the following average value <.epsilon..sub.f > of a bending fracture strain .epsilon..sub.Type: GrantFiled: April 10, 1998Date of Patent: May 9, 2000Assignee: Nippon Steel CorporationInventors: Yoshiharu Inoue, Hiroaki Sakamoto
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Patent number: 5989460Abstract: An electrically conductive floor coating comprising a ferroalloy containing layer including particles of ferroalloy interspersed with a resinous binder.Type: GrantFiled: March 17, 1997Date of Patent: November 23, 1999Assignee: Garland Floor Co.Inventor: William A. Corner
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Patent number: 5959021Abstract: The present invention is a process for protecting articles from electrostatic discharge (ESD) in which a coating is applied directly onto the article in liquid form and the resulting coating provides a surface resistivity that protects the underlying article from ESD. The composition contains a carrier material, carbon black, and a transition metal. The composition forms a coating on an article when applied as a liquid and dried thereon. The ratio of carrier solids to carbon black is about 100 parts by weight polymer to about 0.5 to about 3 parts by weight carbon black. The ratio of carrier solids to transition metal is about 100 parts by weight about 6 to about 15 parts by weight transition metal.Type: GrantFiled: March 26, 1998Date of Patent: September 28, 1999Assignee: Lucent Technologies Inc.Inventor: John Philip Franey
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Patent number: 5958592Abstract: The present invention is a cyanate resin monomer having the formula:NCO--CH.sub.2 --(CF.sub.2).sub.n --CH.sub.2 --OCNwhere n is an even integer from 6 to 10, inclusive.Another aspect of the invention is an essentially pure cyanate resin mono having the formula:NCO--CH.sub.2 --(CF.sub.2).sub.n --CH.sub.2 --OCNwhere n=3, 4, 6, 8, or 10. Another aspect of the invention is a prepolymer made by the process of heating a monomer of the invention to a conversion below the gel point. Another aspect of the invention is a method for depositing an interlevel dielectric resin on an integrated circuit, having the steps: (a) coating the integrated circuit with a thin film of a prepolymer made by the process of heating a monomer of the invention to below the gel point, and (b) curing the prepolymer to at least the gel point. Another aspect of the invention is a low dielectric thermoset polymer resin made from these monomers.Type: GrantFiled: January 13, 1998Date of Patent: September 28, 1999Assignee: The United States of America as represented by the Secretary of the NavyInventors: Arthur W. Snow, Leonard J. Buckley
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Patent number: 5938979Abstract: Electromagnetic shielding material is formed from a shielding composition made with magnetic particles and a binder, where the magnetic particles have an average diameter less than about 1000 nm and are substantially crystalline. The magnetic particles can be formed from Fe.sub.2 O.sub.3, Fe.sub.3 O.sub.4, Fe.sub.3 C, or Fe.sub.7 C.sub.3. The shielding composition can be formed into a layer or into composite particles. The binder can be a metal or an electrically conducting polymer. A conducting layer can be placed adjacent to the shielding composition. The shielding material can be used to protect sensitive electronic devices. Methods are described for forming iron oxide particles by laser pyrolysis.Type: GrantFiled: October 31, 1997Date of Patent: August 17, 1999Assignee: NanoGram CorporationInventors: Nobuyuki Kambe, Xiangxin Bi
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Patent number: 5908584Abstract: An electrically conductive material used for shielding against electromagnetic waves and comprising a binder, a mixture of graphite and amorphous carbon, and sand. It has been shown that this mixture has enhanced shielding properties, particularly in the 100 MHZ range. The graphite/carbon mixture preferably makes up 25-75% of the total weight of the material. The binder may be cementitious. Said material may also be used in conductive floors, electrical heating equipment, light conductors, heating elements, ground connections, resistors, capacitors and antennas.Type: GrantFiled: February 25, 1997Date of Patent: June 1, 1999Assignee: Elfinco S.A.Inventor: Ronald Wilfred Murdoch Bennett
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Patent number: 5908585Abstract: A transparent electrically conductive film having a surface resistivity of 10.sup.2 -10.sup.10 .OMEGA./.sup..quadrature., an overall light transmittance of at least 70%, and a haze value of at most 20% comprises an organic or inorganic transparent matrix having dispersed therein 0.01%-1 wt % of hollow carbon microfibers and 1%-40 wt % of an electrically conductive metal oxide powder (such as antimony-doped tin oxide) with an average primary particle diameter of 0.5 .mu.m or smaller. The matrix can be an organic polymer which is thermoplastic, thermosetting, or curable by ultraviolet radiation, or a metal oxide sol which can form an inorganic glass film, a hydrolyzable or heat decomposable organic metal compound, or the like.Type: GrantFiled: April 23, 1998Date of Patent: June 1, 1999Assignees: Mitsubishi Materials Corporation, Hyperion Catalysis International, Inc.Inventor: Daisuke Shibuta
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Patent number: 5756007Abstract: The present invention is a process for protecting articles from electrostatic discharge (ESD) in which a coating is applied directly onto the article in liquid form and the resulting coating provides a surface resistivity that protects the underlying article from ESD. The composition contains a carrier material, carbon black, and a transition metal. The composition forms a coating on an article when applied as a liquid and dried thereon. The ratio of carrier solids to carbon black is about 100 parts by weight polymer to about 0.5 to about 3 parts by weight carbon black. The ratio of carrier solids to transition metal is about 100 parts by weight about 6 to about 15 parts by weight transition metal.Type: GrantFiled: November 16, 1995Date of Patent: May 26, 1998Assignee: Lucent Technologies Inc.Inventor: John Philip Franey
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Patent number: 5623174Abstract: High voltage generator stator bar for electrical generators internally graded with a fast drying, electrically conductive, carbon-filled thermoplastic paint composition exhibit improved electrical dissipation factor tip-up values.Type: GrantFiled: December 8, 1995Date of Patent: April 22, 1997Assignee: General Electric Co.Inventors: Mark Markovitz, James J. Grant, William E. Tomak
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Patent number: 5589274Abstract: An article includes a substrate having a thermal control coating formed of 1 part by weight of a silicone polymeric matrix having from about 8 to about 4 parts by weight aluminum-doped zinc oxide pigment particles distributed therein. The article may be either relatively thick or flexibly thin, and the coating may be greater than 0.0015 inches thick so as to have a low solar absorptance. The coating has an absorptance of about 0.2-0.3 and an emittance of about 0.9, and is sufficiently electrically conductive to dissipate electrostatic charges.Type: GrantFiled: May 13, 1994Date of Patent: December 31, 1996Assignee: Hughes ElectronicsInventors: Lynn E. Long, Joan L. Lum
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Patent number: 5565530Abstract: A molecular composite material includes a liquid crystal polymer such as polyazomethine, a thermoplastic polymer such as a polyamide and a compatibilizing agent such as .epsilon.-caprolactam having at least one functional group showing compatibility and/or reactivity to the liquid crystal polymer and/or the thermoplastic polymer.Type: GrantFiled: September 11, 1995Date of Patent: October 15, 1996Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Tatsuya Hattori, Kazuhiro Kagawa
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Patent number: 5516546Abstract: A polymerizable (meth)acrylate system which can be cured at ambient temperature to provide a conductive floor coating or shaped article. The composition comprises (meth)acrylates and optionally other monomers and other components such as pre-polymers, plasticizers, customary additives etc., in combination with amorphous or spheroidal graphite and/or carbon fibers and/or finely divided metal. Other fillers may be added. In particular, amorphous natural graphite, preferably having the particle size 20 to 1000 .mu.m, is suitable. Coatings prepared in this way fulfill the requirements in respect of DIN 51 953.Type: GrantFiled: May 25, 1994Date of Patent: May 14, 1996Assignee: Degussa AktiengesellschaftInventors: Siegfried Hari, Dietrich Wenk
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Patent number: 5470649Abstract: A laminated composite material with improved interlaminar strength and damage tolerance having short rods distributed evenly throughout the composite material perpendicular to the laminae. Each rod is shorter than the thickness of the finished laminate, but several times as long as the thickness of each lamina. The laminate is made by inserting short rods in layers of prepreg material, and then stacking and curing prepreg material with rods inserted therethrough.Type: GrantFiled: June 24, 1994Date of Patent: November 28, 1995Assignee: The United States of America as represented by the Adminstrator of the National Aeronautics and Space AdministrationInventor: Gary L. Farley
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Patent number: 5275876Abstract: A static dissipative laminate consistently having an internal resistance less than 2.times.10.sup.6 and a resistance to ground measurement of about 5.times.10.sup.6 and a surface resistance in the static dissipative range even at a very low humidities is produced by the use of an ionic salt and an humectant in the overlay and further by the use of a special top core sheet containing 0.6-1.0% by weight of carbon fibers.Type: GrantFiled: November 2, 1992Date of Patent: January 4, 1994Assignee: Nevamar CorporationInventors: Robin D. O'Dell, Christine C. Wyche, Israel S. Ungar
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Patent number: 5124075Abstract: An electro-conductive sheet having a thickness between 10 and 200 microns that includes carbon fibrils having diameters within the range 0.0036 to 0.5 microns and length to diameter ratios of at least 5 in an electrically insulating polymer material.Type: GrantFiled: July 23, 1990Date of Patent: June 23, 1992Assignee: Hyperion Catalysis International, Inc.Inventors: Naoshi Yasuda, Masaki Nagata
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Patent number: 5076866Abstract: A heat resistant slide member for an internal combustion engine is a plastically worked member formed from a quenched and solidified aluminum alloy, with a metal flow line in a sliding portion thereof set in a sliding direction. The aluminum alloy contains at least one selected from the group consisting of Cr, Fe, Zr and Ti in an amount of 5% or more and 30% by weight or less and has an average diameter of precipitates and crystallizates therein of 50 .mu.m or less and a tensile strength at 300.degree. C. of 18 kg/mm.sup.2 or more.Type: GrantFiled: February 20, 1990Date of Patent: December 31, 1991Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Seiichi Koike, Tomoyoshi Matsuno, Hiroyuki Horimura, Masao Ichikawa, Noriaki Matsumoto, Kazunori Fukizawa
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Patent number: 5041319Abstract: A static protective laminated material suitable for releasably supporting thereupon static-sensitive components having leads, such as integrated circuits and the like, and for protecting such components from electrostatic charges comprises a layer of antistatic material through which the leads of the component being supported may penetrate, the antistatic material being adapted to control the rate of discharge of any static charges through the component leads as the leads are inserted into the laminated material, and a layer of conductive material into which the component leads projecting through the antistatic layer may penetrate and be releasably supported thereupon, the conductive material being adapted to establish a conductive path between the component leads, thereby preventing the discharge of static charges through the component.Type: GrantFiled: June 20, 1989Date of Patent: August 20, 1991Assignee: Conductive Containers, Inc.Inventors: Raymond P. Becker, Robert J. Marlovits
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Patent number: 5002836Abstract: A metal matrix composite comprises essentially-aligned, fine-diameter inorganic oxide fibers embedded in a metal matrix material such as a light metal, for example aluminium or magnesium or an alloy thereof. In a particular embodiment the fibers are nominally-continuous and preferably are of mean diameter below 5 microns. The composite can be made by liquid infiltration of a fiber preform comprising the fibres bound together with an inorganic or an organic binder or (in the case of short fibers) by extrusion of a mixture, for example a suspension, of the fibers and powdered metal matrix material.Type: GrantFiled: November 14, 1989Date of Patent: March 26, 1991Assignee: Imperial Chemical Industries PLCInventors: John Dinwoodie, Michael D. Taylor, Martyn H. Stacey
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Patent number: 4981544Abstract: A thin static dissipative tape construction for use as a rug or runner in static sensitive areas should have a thickness of less than 1.5 mm and preferably less than 1.02 mm and be adhesively coated for application direct to the floor. The tape comprises a static dissipative layer, a conductive layer laminated thereto and a continuous pressure sensitive adhesive coating. The static dissipative layer is textured. The tape may be perforated to apply wide webs to surfaces.Type: GrantFiled: February 3, 1989Date of Patent: January 1, 1991Assignee: Minnesota Mining and Manufacturing CompanyInventor: John E. Nordale
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Patent number: 4942219Abstract: The use of an amorphous block copolyester resin as a viscoelastic resin for a composite vibration damping material, and a viscoelastic resin composition for a composite vibration damping material which comprises the amorphous block copolyester resin and at least one compound selected from the group consisting of polyepoxy compounds, polyisocyanate compounds and acid anhydrides.Type: GrantFiled: October 20, 1988Date of Patent: July 17, 1990Assignees: Toyo Boseki Kabushiki Kaisha, Nippon Steel CorporationInventors: Takeshi Yatsuka, Seiji Yamazoe, Hiroshi Hirakouchi, Yutaka Mizumura, Hiroshi Endo, Nobuo Kadowaki
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Patent number: 4883172Abstract: Container having walls in the form of corrugated board in which an electrically-conductive layer of carbon particles is dispersed through the webs and flute before the corrugated board is assembled.Type: GrantFiled: October 29, 1987Date of Patent: November 28, 1989Assignee: Hy-Con Products, Inc.Inventor: William I. Young