Patents Examined by D G Hamlin
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Patent number: 6818145Abstract: A durable antifreeze/coolant composition for coolants for the cooling systems of internal combustion engines is disclosed. The composition is excellent in inhibiting corrosion of metal portions, especially iron and aluminum portions and effectively inhibits cavitation damage. The antifreeze/coolant composition includes about 0.1-8.0% by weight of C6-C12 aliphatic dibasic acid and/or an alkali metal salt thereof and about 0.1-10% by weight of p-toluic acid and/or an alkali metal salt thereof.Type: GrantFiled: January 10, 2003Date of Patent: November 16, 2004Assignee: Shishiai-KabushikigaishaInventors: Yuji Miyake, Nobuyuki Kaga
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Patent number: 6814758Abstract: Nylon fibers are protected from colorant staining by treating them with at least 2% we/wt (weight dry SAC/weight dry nylon fiber) of sulfonated aromatic aldehyde condensation product. The treated fibers are then fixed by the wet heat method.Type: GrantFiled: April 22, 2002Date of Patent: November 9, 2004Assignee: Simco Holding CorporationInventors: Joseph A. Pacifici, Daniel G. Sims
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Patent number: 6811721Abstract: The present invention provides a composition and a method for reducing the production of persistent bio-accumulative and toxic pollutants in solid carbonaceous reduction reactions in carbochlorination processes.Type: GrantFiled: May 30, 2003Date of Patent: November 2, 2004Assignee: E. I. du Pont de Nemours and CompanyInventors: Stephen W. Taylor, James B. Dunson, Jr.
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Patent number: 6807049Abstract: A solid electrolytic capacitor includes a valve acting metal having microfine pores, a dielectric film formed on a surface of the valve acting metal, and a solid electrolyte layer provided on the dielectric film, in which at least a portion of the solid electrolyte layer is of a lamellar structure. In particular, a solid electrolytic capacitor includes an electrically conducting polymer having a specified condensed ring structure containing (1) a solid electrolyte layer containing a sulfoquinone anion having a sulfo anion group and a quinone structure and other anion, and (2) a solid electrolyte layer containing an anthracenesulfonate ion and other anion.Type: GrantFiled: September 26, 2001Date of Patent: October 19, 2004Assignee: Showa Denko K.K.Inventors: Hiroshi Konuma, Koro Shirane, Ryuji Monden, Atsushi Sakai, Yuji Furuta, Katsuhiko Yamazaki, Toru Sawaguchi, Hideki Ohata, Yoshiaki Ikenoue
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Patent number: 6802988Abstract: Antifreeze concentrates are based on a mixture of at least two different C3- to C16-dicarboxylic acids, molybdate and a mixture of at least two different triazoles or thiazoles.Type: GrantFiled: April 17, 2002Date of Patent: October 12, 2004Assignee: BASF AktiengesellschaftInventors: Bernd Wenderoth, Ralf Strauss, Jacques Lonchampt
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Patent number: 6802869Abstract: Disclosed is a novel rayon fiber which possesses characteristics similar to those of a viscose rayon fiber as to be suitable for use in clothes in addition to being produced at an economical cost. The rayon fiber is prepared from a cellulose acetate fiber with a degree of substitution of 2.0 or higher by saponifying 75% or greater of the total acetyl groups of the cellulose acetate fiber into hydroxyl groups and has a composite crystalline structure of cellulose II and IV.Type: GrantFiled: January 11, 2002Date of Patent: October 12, 2004Assignee: SK Chemicals Co., Ltd.Inventors: Ik Soo Kim, Jong Soo An, Byung Hak Kim
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Patent number: 6797200Abstract: A fire-retardant composition includes a base polymer composition, including a polymer base material; melamine or a melamine derivative; red phosphorus; magnesium hydroxide or hydrated oxide, aluminum hydroxide or hydrated oxide, or magnesium hydroxide or hydrated oxide and aluminum hydroxide or hydrated oxide; and zeolite. The melamine or melamine derivative includes amounts between 5 and 50 parts-by-weight, inclusive. The red phosphorus includes amounts between 5 and 50 parts-by-weight, inclusive. The magnesium hydroxide or hydrated oxide, aluminum hydroxide or hydrated oxide, or magnesium hydroxide or hydrated oxide and aluminum hydroxide or hydrated oxide includes amounts between 10 and 150 parts-by-weight, inclusive. The zeolite includes amounts between 1 and 5 part-by-weight, inclusive. A self-extinguishing cable, including at least one conductor and at least one coating layer is also disclosed. The at least one coating layer includes the fire-retardant composition.Type: GrantFiled: January 7, 2003Date of Patent: September 28, 2004Assignee: Pirelli Cavi E Sistemi S.p.A.Inventors: Cristiana Scelza, Antonio Zaopo
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Patent number: 6790384Abstract: A solid electrolytic capacitor includes a valve acting metal having microfine pores, a dielectric film formed on a surface of the valve acting metal, and a solid electrolyte layer provided on the dielectric film, in which at least a portion of the solid electrolyte layer is of a lamellar structure. In particular, a solid electrolytic capacitor includes an electrically conducting polymer having a specified condensed ring structure containing (1) a solid electrolyte layer containing a sulfoquinone anion having a sulfo anion group and a quinone structure and other anion, and (2) a solid electrolyte layer containing an anthracenesulfonate ion and other anion.Type: GrantFiled: September 25, 2001Date of Patent: September 14, 2004Assignee: Showa Denko K.K.Inventors: Hiroshi Konuma, Koro Shirane, Ryuji Monden, Atsushi Sakai, Yuji Furuta, Katsuhiko Yamazaki, Toru Sawaguchi, Hideko Ohata, Yoshiaki Ikenoue
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Patent number: 6790386Abstract: A dielectric fluid comprises an isoparaffinic base oil and hydrogen donor compound. The base oil may be a hydroisomerized isoparaffinic oil, and the hydrogen donor may be a substituted, or partially saturated aromatic compound. The resulting dielectric fluid exhibits negative hydrogen gassing properties along with good oxidative stability and low temperature performance.Type: GrantFiled: April 2, 2002Date of Patent: September 14, 2004Assignee: Petro-CanadaInventors: Michael Fefer, Tomoki Ruo
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Patent number: 6773622Abstract: Formulations for anti-icing compositions are of two basic types. The first basic formulation describes alcohol/polyol-based aqueous fluids thickened by the combination of an acrylic emulsion and a water-swellable layered clay mineral, with optional addition of a surfactant combination comprised of a first surfactant with an HLB≦3 coupled with a second surfactant with an HLB 19, and further optional addition of a water-activated polymer and other components. The second basic formulation describes a polyol-based aqueous solution of polyvinyl alcohol with optional thickeners.Type: GrantFiled: September 14, 2000Date of Patent: August 10, 2004Inventors: Greg R. Andrews, Robert S. Mendenhall
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Patent number: 6770287Abstract: The present invention provides, inter alia, durable and renewable biocidal wooden materials for safe food contact items, such as cutting boards and containers, to be used in home kitchens and the food processing industries. The biocidal food contact surfaces of the present invention reduce and eliminate cross-contamination of diseases and make the surfaces or wood cutting boards safer to use. The biocidal materials inactivate any microorganisms that are deposited and prevent the materials from building up biofilms.Type: GrantFiled: June 19, 2000Date of Patent: August 3, 2004Assignee: The Regents of the University of CaliforniaInventors: Gang Sun, Xiangjing Xu, Dean Cliver
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Patent number: 6764616Abstract: A composition comprising (a) an epoxy resin, (b) an OH-terminated polysiloxane, (c) a cyclic polysiloxane and (d) a non-ionic, fluoroaliphatic surface-active reagent, exhibits excellent hydrophobicity properties and can be used as electrical insulating material.Type: GrantFiled: June 7, 2001Date of Patent: July 20, 2004Assignee: Huntsman Advanced Materials Americas Inc.Inventors: Christian Beisele, Thomas Kainmüller, Qian Tang
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Patent number: 6758988Abstract: Anti-corrosion solutions and processes useful for refrigeration processes are disclosed. Heteropoly complex anions of transitional metal elements can be added to an absorption solution which includes aqueous ammonia, alkali metal hydroxide and/or alkaline earth metal hydroxide, optionally in combination with transition metal compounds or compounds of the metallic elements of Groups IIIa to VIa of the Periodic Table of Elements to minimize corrosion of systems within which the solution is used.Type: GrantFiled: September 6, 2000Date of Patent: July 6, 2004Assignee: FMC CorporationInventors: Shyam Kumar Verma, George Robert Sandor
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Patent number: 6743381Abstract: A process for forming a thixotropic ink for use in manufacturing the ceramic of a zinc oxide varistor where the ceramic includes zinc, oxygen and a plurality of additive elements. The process includes the steps of calcining a mixture of powders of zinc oxide and the additive elements to form a calcined product having a particle size larger than the particle size of the zinc ozide powders, mixing said calcined product with an organic liquid, mechanically working the mixture to produce a calcined particulate material in the organic liquid having a particle size less than the particle size of said calcined product, adding an organic binder to the mixture and mixing the composition to produce said ink.Type: GrantFiled: September 4, 2001Date of Patent: June 1, 2004Assignee: Littlefuse, Inc.Inventors: Stephen P. Cowman, Derek A. Nicker, John M. Shreeve
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Patent number: 6740261Abstract: The thermistor element of the present invention is composed of a mixed sintered body aM1M2O3bY2O3 of a composition M1M2O3 (wherein M1 is Y, and M2 is at least one element selected from the elements such as Cr, Mn, Ti, etc.) as a perovskite compound and Y2O3, wherein molar fractions a and b satisfy the relations 0.05≦a<1.0, 0<b≦0.95 and a+b=1. Another wide-range type thermistor element of the present invention is composed of a perovskite compound M1 (M2M3)O3, wherein M1 is at least one element selected from the elements of the groups II and IIIA excluding La in the Periodic Table, and each of M2 and M3 is at least one element selected from the elements of the groups IIB, IIIB, IVA, VA, VIA, VIIA and VIII. a and b satisfy the relations a+b=1 and 0<b<0.1, where a is a molar fraction of M2 and b is a molar fraction of M3 in M1(M2M3)O3.Type: GrantFiled: November 28, 2000Date of Patent: May 25, 2004Assignees: Denso Corporation, Nippon Soken, Inc.Inventors: Itsuhei Ogata, Takumi Kataoka, Eturo Yasuda, Kaoru Kuzuoka, Masanori Yamada
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Patent number: 6730130Abstract: An agent containing a lubricant, a non-ionic surfactant and an amphoteric surfactant of a specified kind in specified amounts is applied at a specified rate to spun synthetic fibers before draft and false-twisting processes are simultaneously carried on these fibers such that false-twisted yarns with a high quality without dyeing specks and without abnormal tension variations can be obtained.Type: GrantFiled: March 26, 2002Date of Patent: May 4, 2004Assignee: Takemoto Yushi Kabushiki KaishaInventors: Shigehiko Sakuraba, Masahiro Nagaya, Yukiko Nagai, Fumihiko Kimura
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Patent number: 6723254Abstract: Frost resistant, aqueous cooling/heating fluid containing alkali salts of acetic acid and/or formic acid and which as a corrosion inhibitor contains a mixture of a C5-C16 monocarboxylic acid or alkali-, ammonium- or amino-salts of said acid, a C5-C16 dicarboxylic acid or alkali-, ammonium- or amino-salts of said acid, and also a triazole.Type: GrantFiled: January 27, 2000Date of Patent: April 20, 2004Assignee: Temper Technology ABInventor: Martin Starzmann
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Patent number: 6719812Abstract: A method of infusing a dye into the surface of an article formed of a plastic material comprises contacting the surface with a solution including one or more solvents each aggressive to the plastic material, one or more dyes and one or more substances each capable of plasticizing the plastic material. If the plastic material is polycarbonate, then the aggressive solvent may be one or more chlorinated hydrocarbons. The dye may be a photochromic dye, a cosmetic tinting dye, dyes for absorbing infrared, laser and ultraviolet radiation, or combinations thereof. A wide range of plasticizers has been investigated. The article is contacted by the solution for ten seconds to one minute; and nearly all the infused solvent is then evaporated from the article by heating. The use of one or more plasticizers reduces or eliminates bubbling or hazing of the contacted surface during solvent evaporation.Type: GrantFiled: April 11, 2000Date of Patent: April 13, 2004Assignee: Gentex Optics, Inc.Inventors: Paresh V. Kitchloo, Robert A. Sallavanti
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Patent number: 6692536Abstract: There is provided the use of a crystal growth inhibitor for reducing the fabric abrasion occurring upon laundering treatment.Type: GrantFiled: June 19, 2000Date of Patent: February 17, 2004Assignee: The Procter & Gamble CompanyInventors: Axel Masschelein, Christiaan Arthur Jacques Kamiel Thoen
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Patent number: 6692537Abstract: The present application relates to a cosmetic composition intended for treating keratin fibers, comprising, in a support which is suitable for keratin fibers: (a) at least one enzyme of 2-electron oxidoreductase type in the presence of at least one donor for the said enzyme; (b) at least one nonionic fatty sucronamide; as well as to processes for treating keratin fibers, in particular processes for dyeing, permanently reshaping or bleaching the hair, using this composition.Type: GrantFiled: June 30, 1999Date of Patent: February 17, 2004Assignee: L'Oreal S.A.Inventors: Roland de la Mettrie, Jean Cotteret, Arnaud de Labbey, Mireille Maubru