Patents Examined by Melanie Bissett
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Patent number: 6887937Abstract: A coating composition comprising a hydroxy group-containing film forming polymer with a hydroxy value between 75 and 300 mg KOH/g solid resin, a polyisocyanate compound, and a diol of the general formula HO—CH2—CR(C2H5)—CH2—OH, wherein R is an alkyl group having 3-6 carbon atoms. The invention further relates to a method of coating which comprises said coating composition being applied to a substrate, and to a coated substrate, in particular cars and large transport vehicles.Type: GrantFiled: November 22, 1999Date of Patent: May 3, 2005Assignee: Akzo Nobel NVInventors: Paul Marie Vandevoorde, Antonius H. G. Van Engelen, Ann Alfred J. Lemaire
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Patent number: 6884862Abstract: a composition for film formation which can be cured in a short time period and give a film having a low dielectric constant and excellent in heat resistance, adhesion and cracking resistance, a polymer for use in the composition and a process for producing the polymer. The composition prepared by dissolving the polymer having specific repeating units in a solvent has excellent film-forming properties. The polymer has repeating units represented by the following general formula (1): wherein Z and Y are as defined hereinabove.Type: GrantFiled: April 24, 2002Date of Patent: April 26, 2005Assignee: JSR CorporationInventors: Takashi Okada, Noriyasu Sinohara, Kaori Shirato, Masahiko Ebisawa, Michinori Nishikawa, Kinji Yamada
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Patent number: 6884510Abstract: The present-invention relates to optical elements comprising fluorochemical surface treatments. The invention further relates to materials such as retroreflective sheetings, pavement markings and beaded projection screens comprising a binder and the surface treated optical elements.Type: GrantFiled: April 29, 2003Date of Patent: April 26, 2005Assignee: 3M Innovative Properties CompanyInventors: Zai-Ming Qiu, Naiyong Jing
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Patent number: 6861150Abstract: The present invention is directed to a rheology control agent. The rheology control agent is used in a coating composition and is the reaction product of a first compound comprising a plurality of hydroxyl groups, of a lactone compound, and of a carbamate compound. The present invention is also directed to a coating composition including the rheology control agent and to a method of preparing the rheology control agent.Type: GrantFiled: July 26, 2002Date of Patent: March 1, 2005Assignee: BASF CorporationInventors: Swaminathan Ramesh, Marvin L Green
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Patent number: 6861470Abstract: A thermoplastic elastomer composition dynamically vulcanized to a gelation rate of 50 to 95% which is superior in heat resistance and durability while maintaining flexibility and superior in air permeation preventive property which can be efficiently used as, for example, a pneumatic tire as an air permeation preventive layer. The method includes mixing a composition (C) mixed under conditions of a ratio of melt viscosities of the rubber composition (A)/resin (B) of 0.8 to 1.2 and the formula (?A/?B)×(?B/?A)<1.0 under conditions of a ratio of melt viscosities of the rubber composition (D)/composition (C) of 0.8 to 1.2 and the formula (?D/?C)×(?C/?D)<1.0, wherein ?A: volume fraction of rubber composition (A), ?B: volume fraction of resin (B), ?A: melt viscosity of rubber composition (A), ?B: melt viscosity of resin (B), ?C: volume fraction of composition (C), ?D: volume fraction of rubber composition (D), ?C: melt viscosity of composition (C), ?D: melt viscosity of rubber composition (D).Type: GrantFiled: January 21, 2003Date of Patent: March 1, 2005Assignee: The Yokohama Rubber Co., Ltd.Inventors: Jiro Watanabe, Kazuto Yamakawa, Daisuke Kanenari, Noriaki Kuroda, Gou Kawaguchi, Yuichi Hara, Tetsuji Kawazura, Shigeru Yamauchi, Hideo Nemoto
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Patent number: 6852828Abstract: A poly amic acid precursor containing a combination of tetrahydrofuran and N-methylpyrrolidinone as cosolvents is described. Utilizing the combination of tetrahydrofuran and N-methylpyrrolidinone allows for the removal of significant portions of the solvent during the formation of the polyimide. The removal of tetrahydrofuran and N-methylpyrrolidinone can be done without the use of preheating zones so as to allow for the large scale production of polyimide articles.Type: GrantFiled: February 15, 2002Date of Patent: February 8, 2005Assignee: Medtronic, Inc.Inventor: Lisa Scott
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Patent number: 6852418Abstract: A composite structure is disclosed. The structure includes one or several polyurethane layers, a support layer, in particular a textile support layer, as well as an optional adhesive layer placed between these layers. The composite structure is characterized in that at least one of the polyurethane layers contains a polyurethane having the formula (I) wherein O—R1—O— is the radical of a polyole with primary and/or secondary hydroxyl functional end groups, R1 and R2 independently represent an organic radical which includes aliphatic, cyclo-aliphatic, aromatic and/or heterocyclic groups, and n is an integer number between 1 and 50,000. Also disclosed is a method of manufacturing the composite structure and its use as imitation leather.Type: GrantFiled: July 7, 2000Date of Patent: February 8, 2005Assignee: Benecke-Kaliko AGInventors: Claus Zürbig, Hans-Hinrich Kruse
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Patent number: 6849327Abstract: An optical filter comprising a filter layer absorbing visible light, a transparent support, in particular a transparent support comprising a biaxially stretched film, and an antireflection layer, with which an image display such as a plasma display is equipped for preventing reflection and improving color reproduction. An optical filter comprising a transparent support having provided at least on one side of the support a filter layer containing a dye and a polymer binder, wherein an antireflection layer having an antireflection property to visible light is provided on the side opposite to the side on which the filter layer is provided when the filter layer is provided on either one side, and the antireflection layer is provided on either one side when the filter layers are provided on both sides, and the transparent support comprises a biaxially stretched film having a thickness of from 10 to 500 ?m.Type: GrantFiled: June 15, 2000Date of Patent: February 1, 2005Assignee: Fuji Photo Film Co., Ltd.Inventors: Isao Ikuhara, Tsukasa Yamada, Takumi Ando
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Patent number: 6846856Abstract: A composite structure comprises an inorganic discrete phase, an organic matrix phase and an interfacial layer comprising both the inorganic and organic phases. In one process, the inorganic discrete phase is partially dissolved and the precipitated by a chemical reaction forming an interfacial layer having a finite thickness and transitioning from 100% inorganic to 100% organic.Type: GrantFiled: May 20, 2003Date of Patent: January 25, 2005Assignee: Innovative Construction and Building MaterialsInventors: David S. Soane, Christopher D. Tagge
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Patent number: 6843933Abstract: Blocked polyisocyanates, their preparation and use in one-component coating materials. In organic polyisocyanates having at least two isocyanate groups, the isocyanate groups are blocked with OH acidic cyclic ketones of the general formula (I). The blocked polyisocyanate system of the invention reacts without elimination of the blocking agent and possesses low crosslinking temperatures.Type: GrantFiled: June 10, 2003Date of Patent: January 18, 2005Assignee: Bayer AktiengesellschaftInventors: Michael Schelhaas, Christoph Gürtler, Beate Baumbach, Christian Füssel
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Patent number: 6844030Abstract: This invention concerns a process for modifying a polymeric substrate by contacting the surface with a photoreactive solution of an inorganic photochemical electron donor while irradiating the surface with actinic radiation. Patterns of modified and unmodified surfaces can be produced. Polymeric substrates with modified surfaces may be effectively bonded to polymer films to form composite articles. The process has particular applicability to the surface modification of fluorinated polymers.Type: GrantFiled: December 14, 2001Date of Patent: January 18, 2005Assignee: 3M Innovative Properties CompanyInventors: Naiyong Jing, George Van Dyke Tiers
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Patent number: 6838169Abstract: The present invention provides, chemical mechanical polishing pad with improved polishing properties and longevity for polishing semiconductor wafers. The polishing pad comprises a thermoplastic backing film and a pressure sensitive adhesive coupled to the thermoplastic backing film. The pressure sensitive adhesive is configured to couple a chemical mechanical polishing pad to a polishing platen. The pressure sensitive adhesive is further configured to provide an interface capable of substantially preventing delamination of the polishing pad from the polishing platen for at least about 4 days exposure to a polishing slurry medium having a pH of about 4 or higher.Type: GrantFiled: March 27, 2003Date of Patent: January 4, 2005Assignee: PsiloQuest, Inc.Inventor: Yaw S. Obeng
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Patent number: 6827875Abstract: The present invention relates to new blocked polyisocyanates with which high-grade, emission-free coatings and lacquer coatings with reduced yellowing values can be obtained, to a method of producing them, and to the use thereof in one-component polyurethane systems, particularly as crosslinking agents in automobile primer surfacers.Type: GrantFiled: June 28, 2002Date of Patent: December 7, 2004Assignee: Bayer AktiengesellschaftInventors: Michael Schelhaas, Christoph Gürtler
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Patent number: 6824847Abstract: A radially deployable flexible preform which, after deploying, forms a tubular structure that is curable by polymerization after positioning it in a well or in a line and moulds to the shape thereof after curing, comprises in its constitution at least one resin comprising in its chemical formula, at least one reactive multiple bond that is capable of subsequent reaction with compounds comprising in their constitution at least one terminal reactive multiple bond or a reactive multiple bond positioned at one end or the other of the molecular chain and/or on a pendant group. The long latent period heat curing resin has a glass transition temperature of at least 90° C. and can be associated with at least one polymerizable oligomer and/or at least one monomer comprising at least one multiple bond in its chemical formula. The resin can also be associated with drying reducers or flow regulators ensuring optimum retention of the fiber/matrix ratio during pressing occurring on deployment of the expandable preform.Type: GrantFiled: February 8, 2001Date of Patent: November 30, 2004Assignee: Institut Francais du PetroleInventors: Paul Mariaggi, Dominique Audigier, Frédérique Hauviller
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Patent number: 6824876Abstract: An adhesive for use in coated abrasive belt joints includes a blocked isocyanate, urethane system. The blocking agent can include phenols, oximes, alcohols, caprolactam, and diethyl malonate. The adhesive can be crosslinked with amine or alcohol. A coated abrasive belt is formed by attaching a plurality of abrasive particles to a first surface of a backing layer. A size coat is deposited over the abrasive particles to form a coated abrasive. The coated abrasive is cut to form a strip having a first end and a second end. The ends of the strip are joined with an adhesive including a blocked isocyanate, urethane system.Type: GrantFiled: June 21, 2001Date of Patent: November 30, 2004Assignee: Saint-Gobain Abrasives Technology CompanyInventors: Gwo Shin Swei, Jony Wijaya, Shyiguei Hsu
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Patent number: 6824874Abstract: Methods and materials for sealing and insulating a fuel cell plate are disclosed. The disclosed process includes applying a coating precursor on at least one surface of the fuel cell plate, and curing the coating precursor by exposure to radiation. Disclosed coating precursors include those containing an acrylated oligomer and a photoinitiator, which can polymerize in response to ultraviolet or electron beam radiation. Other disclosed coating precursors are those that can polymerize in response to exposure to infrared radiation or heating, and include epoxy nitrile resins and organopolysiloxane resins. The disclosed processes and coating precursors provide certain advantages over conventional methods and designs for insulating and sealing fuel cell plates since the disclosed coating precursors can be quickly and precisely applied to fuel cell plates by, for example, screening printing.Type: GrantFiled: August 23, 2000Date of Patent: November 30, 2004Assignee: Dana CorporationInventors: Kanu G. Shah, Frank W. Popielas, Brent R. Boldt, Dennis F. Person
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Patent number: 6809125Abstract: A foam and method for making such foam includes a blend of a low density polyethylene and a higher density ethylene polymer. The ethylene polymer has a density ranging from greater than 0.94 to about 0.97 grams/cubic centimeter and a melt flow index of greater than 10 g/10 minutes, and may include at least one member selected from ethylene/alpha-olefin copolymer, ethylene homopolymer, and blends thereof.Type: GrantFiled: June 2, 2000Date of Patent: October 26, 2004Assignee: Sealed Air Corporation (US)Inventors: Shau-Tarng Lee, Natarajan S. Ramesh
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Patent number: 6808811Abstract: The polarizing plate protection film of the present invention has excellent adhesion with the polarizer because of the polyurethane resin layer formed on the thermoplastic saturated norbornene-type resin film. In addition, blocking of the protection film can be prevented by the PVA layer formed on the polyurethane resin layer. The polarizing plate using the protection film of the present invention is excellent in terms of durability under high temperature and high humidity conditions, and it is suitably used for liquid crystal displays and such.Type: GrantFiled: September 21, 2001Date of Patent: October 26, 2004Assignee: Sekisui Chemical Co., Ltd.Inventors: Takahiko Sawada, Yasumasa Okada, Hitoshi Kobayashi
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Patent number: 6805953Abstract: In accordance with the present invention, a foamed structure having closed cells or both closed cells and open cells can be effectively used as a waterstop sealing material. In particular, a waterstop sealing material having excellent sealing properties can be provided. The waterstop sealing material comprises a foamed structure having closed cells or both closed cells and open cells, the foamed structure having a multi-layer pressure-sensitive adhesive layer provided on at least one side thereof, optionally through a base material, the multi-layer pressure-sensitive adhesive layer comprising as an outermost layer a layer made of a pressure-sensitive adhesive composition containing a polymer having a polycarbonate structure having a repeating unit represented by formula: wherein R represents a C2-20 straight-chain or branched hydrocarbon group and n represents a positive integer.Type: GrantFiled: February 9, 2000Date of Patent: October 19, 2004Assignee: Nitto Denko CorporationInventors: Katsuhiko Tachibana, Masahiko Ando, Yasuyuki Tokunaga, Manabu Matsunaga, Atsushi Kuriu
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Patent number: 6800337Abstract: The invention relates to a heat-insulating coating which comprises one or more cholesteric IR-reflecting layers and to processes for its preparation and to its use.Type: GrantFiled: April 12, 2000Date of Patent: October 5, 2004Assignee: BASF AktiengesellschaftInventors: Karl Siemensmeyer, Peter Schuhmacher, Frank Meyer, Norbert Schneider, Hiroki Ishida