Patents Assigned to Otsuka Kagaku Kabushiki Kaisha
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Patent number: 7368123Abstract: According to the present invention, there is provided a pesticidal resin composition that contains (A) at least one resin selected from polyamide resins and polyacetal resins, (B) at least one compound selected from sulfone amide derivatives, sulfonic acid ester derivatives, phosphoric acid ester derivatives, phosphazene derivatives, carboxylic acid amide derivatives, carboxylic acid ester derivatives, and (C) a chemical agent having a pesticidal property. With the pesticidal resin composition containing the above ingredients, it is possible to obtain a pesticidal product that has such a strength, heat resistance and chemical resistance as to render the product usable as a structural member, as well as being capable of exhibiting the pesticidal activity for a prolonged period of time.Type: GrantFiled: January 14, 2000Date of Patent: May 6, 2008Assignees: Otsuka Kagaku Kabushiki Kaisha, NIX, Inc.Inventors: Akira Tabuchi, Kiyozumi Tani, Akiyoshi Inubushi, Atushi Kamada, Masaharu Kamei, Osamu Igarashi
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Patent number: 7183421Abstract: The present invention provides a process for producing an oxide from an alcohol compound, the process comprising the steps of causing silica gel to carry the alcohol compound thereon and an oxidative catalyst thereon, and oxidizing the alcohol compound in the presence of an oxidizing agent, giving an oxide higher in oxidizing degree than the alcohol compound, and also provides a process for producing an oxide from an alcohol compound, the process comprising the steps of causing silica gel to carry the alcohol compound, and subjecting the alcohol compound to an electrolytic oxidation, giving an oxide higher in oxidizing degree than the alcohol compound.Type: GrantFiled: August 11, 2004Date of Patent: February 27, 2007Assignee: Otsuka Kagaku Kabushiki KaishaInventors: Hideo Tanaka, Yutaka Kameyama
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Patent number: 6887992Abstract: A 3-cephem derivative crystal which is a clathrate compound comprising p-methoxybenzyl ester of 7-phenylacetamide-3-formyl-3-cephem-4-carboxylic acid and dimethylformamide and a process for preparing the 3-cephem derivative crystal.Type: GrantFiled: October 7, 2003Date of Patent: May 3, 2005Assignee: Otsuka Kagaku Kabushiki KaishaInventors: Takashi Moriyoshi, Yasuhiro Uosaki, Yutaka Kameyama, Daisuke Suzuki, Yoshiko Seo
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Patent number: 6797830Abstract: The present invention provides a process for producing an oxide from an alcohol compound, the process comprising the steps of causing silica gel to carry the alcohol compound thereon and an oxidative catalyst thereon, and oxidizing the alcohol compound in the presence of an oxidizing agent, giving an oxide higher in oxidizing degree than the alcohol compound, and also provides a process for producing an oxide from an alcohol compound, the process comprising the steps of causing silica gel to carry the alcohol compound, and subjecting the alcohol compound to an electrolytic oxidation, giving an oxide higher in oxidizing degree than the alcohol compound.Type: GrantFiled: November 28, 2001Date of Patent: September 28, 2004Assignee: Otsuka Kagaku Kabushiki KaishaInventors: Hideo Tanaka, Yutaka Kameyama
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Patent number: 6797750Abstract: The present invention has an object to provide a flame-retardant epoxy resin composition excellent in heat resistance and moisture resistance. A flame-retardant epoxy resin composition relating to the present invention contains an epoxy resin (A), a phosphazene compound (B), an epoxy hardener (C) and an inorganic filler (D), wherein the phosphazene compound (B) and the epoxy hardener (C) are included in the range of 0.Type: GrantFiled: November 7, 2002Date of Patent: September 28, 2004Assignee: Otsuka Kagaku Kabushiki KaishaInventors: Masatoshi Taniguchi, Yuji Tada, Yoichi Nishioka
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Patent number: 6787192Abstract: A process for preparing a treated magnesium and/or magnesium alloy component comprising (A) treating the magnesium and/or magnesium alloy component with a surface treating agent containing a phosphate, (B) treating the component with a pre-treating agent used before a corrosion inhibition treatment, (C) treating the component, as required, with a cleaning agent containing surfactant and at least one compound selected from among aromatic carboxylic acids and salts thereof, and thereafter (D) treating the component further as required, with a corrosion inhibitor for magnesium.Type: GrantFiled: February 6, 2003Date of Patent: September 7, 2004Assignee: Otsuka Kagaku Kabushiki KaishaInventors: Kazunori Fukumura, Koji Sakane
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Patent number: 6713164Abstract: A printing sheet shaped from a resin containing 5 to 80 wt. % of a fibrous electrically conductive filler less than 100 &OHgr;·cm in volume resistivity, having 3 to 50 &mgr;m in average fiber length, 0.01 to 5 &mgr;m in average fiber diameter and 3 to 100 in aspect ratio and having a surface coated with an electrically conductive layer containing at least a tin oxide and an antimony oxide, or a printing sheet comprising a film substrate and a covering layer formed on at least one surface of the substrate and comprising a resin containing the above conductive filler.Type: GrantFiled: December 10, 1999Date of Patent: March 30, 2004Assignee: Otsuka Kagaku Kabushiki KaishaInventors: Yukiya Hareyama, Hidetoshi Ogawa
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Patent number: 6703438Abstract: An electroconductive plate-like titania containing at least 10% by weight of titanium nitride and at least 0.1% by weight of carbon component can provide electroconductive parts which are higher and more uniform in electroconductivity.Type: GrantFiled: September 25, 2001Date of Patent: March 9, 2004Assignee: Otsuka Kagaku Kabushiki KaishaInventor: Yukiya Hareyama
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Patent number: 6632891Abstract: A flame-retardant resin composition comprising a phosphazene flame retardant and a polyester resin, wherein the flame retardant is bonded to the molecules of the polyester resin via the ester group thereof, can retain a high flame retardance for a prolonged term with little or no vaporization with time and is excellent in flame retardance, impact resistance, properties and processability.Type: GrantFiled: September 13, 2000Date of Patent: October 14, 2003Assignee: Otsuka Kagaku Kabushiki KaishaInventors: Yuji Tada, Yoichi Nishioka, Tadao Yabuhara, Takashi Kameshima, Shinji Nakano
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Patent number: 6576761Abstract: 1. A process for preparing a 3-alkenylcephem compound or 3-norcephem compound of the formula (3) characterized in that an alkenyl halide of the formula (2), a nickel catalyst, a metal up to −0.3 (V/SCE) in standard oxidation reduction potential and a compound of a metal having a higher standard oxidation reduction potential than the metal are caused to act on a 3-cephem compound of the formula (1) in a solvent wherein R1 is a hydrogen atom or the like, R2 is a hydrogen atom or the like, R3 is a hydrogen atom or carboxylic acid protective group, and X is a halogen atom or the like, R4—Y (2) wherein R4 is 1-alkenyl having or not having a substituent, and Y is a halogen atom wherein R1, R2 and R3 are as defined above, and R5 is a hydrogen atom or 1-alkenyl having or not having a substituent.Type: GrantFiled: February 7, 2002Date of Patent: June 10, 2003Assignee: Otsuka Kagaku Kabushiki KaishaInventors: Hideo Tanaka, Yutaka Kameyama
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Patent number: 6569264Abstract: The present invention provides a corrosion inhibitor composition for magnesium or magnesium alloys which contains as an effective component, at least one compound selected from among aromatic carboxylic acids and salts thereof as an effective component. Further, the present invention provides a surface treating agent for magnesium and/or magnesium alloy components which contains a phosphate, at least one compound selected from among aromatic carboxylic acids and salts thereof, and further, as required, at least one compound selected from among pyrazole compounds and triazole compounds,and surface-treating method using the surface treating agent.Type: GrantFiled: July 3, 2001Date of Patent: May 27, 2003Assignee: Otsuka Kagaku Kabushiki KaishaInventors: Kazunori Fukumura, Takahiko Shiraishi
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Patent number: 6541111Abstract: The present invention provides a polycrystalline hexagonal boron nitride compound comprising fine crystals of the order of nanometers. The present invention also provides a hexagonal boron nitride characterized in that the boron nitride is 20 to 200 nm in mean particle size and comprises at least 80 wt. % of particles having sizes in the range of the mean particle size±30%. The present invention further provides a fine hexagonal boron nitride powder characterized in that the powder comprises particles in the form of circular disks or elliptical disks having a minor axis La, a major axis Lb and a thickness t which satisfy the following expressions. 50 nm≦La≦Lb≦400 nm 20 nm≦t≦150 nm t≦La 0.5≦La/Lb≦1.0.Type: GrantFiled: September 27, 2001Date of Patent: April 1, 2003Assignee: Otsuka Kagaku Kabushiki KaishaInventors: Faustinus Fauzi, Masato Tani, Masayoshi Suzue
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Patent number: 6523527Abstract: A tubular resin contains small animal repelling chemical. And canister structure installed in an automobile comprises the above tubular resin on the inner wall of an air inlet port portion of a drain pipe. The canister structure absorbs evaporated fuel from a fuel tank by a absorbent in a main body of a canister and then supplies desorbed fuel from the adsorbent together with the air sucked from the drain pipe to an engine side. The tubular resin prevents entering of a small animal into the drain pipe and also building of its nest.Type: GrantFiled: August 31, 2000Date of Patent: February 25, 2003Assignees: Nissan Motor Co., Ltd., Kabushiki Kaisha NIX, Otsuka Kagaku Kabushiki Kaisha, Earth Biochemical Co., Ltd.Inventors: Katsunori Ozaki, Tomiyuki Satoh, Michiaki Sasaki, Osamu Igarashi, Akira Tabuchi, Kiyozumi Tani, Atsushi Kamada, Masaharu Kamei
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Patent number: 6448393Abstract: 3-Halogenomethylcephem compound of the formula (2) or its salt is obatined by deprotecting with phenol derivative a carboxylic acid protecting group at the 4-position of 7-amino-3-halogenomethylcephem compound of the formula (1) or its salt Further 3-thiomethylcephem compound of the formula (4) or its salt is prepared by reacting 3-halogenomethylcephem compound of the formula (2) or its salt with thiol compound or its salt of the formula (3) wherein X1, R1, R2 and M are as defined in the specification.Type: GrantFiled: April 14, 2000Date of Patent: September 10, 2002Assignee: Otsuka Kagaku Kabushiki KaishaInventor: Yutaka Kameyama
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Patent number: 6433042Abstract: A curing agent for epoxy resin which comprises at least one selected from the compound of the formula (1) and its salt, as an effective component wherein X is —(CH2)n- or —(CH2)1-Y—(CH2)m- , Y is —N(R1)—, —O— or —S—, R1 is alkyl having 1 to 8 carbon atoms or amino. n is a number of 2, 3, 5 to 11, 1 and m are each a number of 1 to 8.Type: GrantFiled: February 5, 2001Date of Patent: August 13, 2002Assignee: Otsuka Kagaku Kabushiki KaishaInventors: Yoshihisa Tomotaki, Takashi Kitajima, Keiichiro Ishikawa, Akihiro Nabeshima, Tomohiro Furuichi
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Patent number: 6420554Abstract: A process for preparing a 3-cephem compound represented by the formula (3), the process comprising the steps of reacting a &bgr;-lactam compound represented by the formula (1) with a phosphorus halide compound in the presence of an organic base to give an imino-&bgr;-lactam compound represented by the formula (2), adding a phenol to the same reaction system to cause decomposition due to reaction with an alcohol and simultaneously to remove the protection of carboxylic acid ester, giving a 3-cephem compound represented by the formula (3) or a salt thereof where R1, R2, R3 and X are as defined above.Type: GrantFiled: February 29, 2000Date of Patent: July 16, 2002Assignee: Otsuka Kagaku Kabushiki KaishaInventors: Yutaka Kameyama, Takae Yamada, Dal Soo Suh
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Patent number: 6417351Abstract: A process for preparing 3-alkenylcephem compounds characterized in that 3-alkenylcephem compound of the formula (3) is prepared in a single step by simultaneously conducting reactions of a 3-chloromethylcephem compound of the formula (1) with iodization reagent, alkali metal hydroxide or carbonate, arylphosphine and an aldehyde of the formula (2) R4—CHO (2) wherein R1, R2, R3 and R4 are as defined in the specification.Type: GrantFiled: December 1, 1999Date of Patent: July 9, 2002Assignee: Otsuka Kagaku Kabushiki KaishaInventor: Yutaka Kameyama
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Patent number: 6403789Abstract: A halogenating agent of the formula (1) and a method of halogenating hydroxyl group wherein R1 and R2 are the same or different and are each ethyl, propyl, isopropyl, butyl, isobutyl or allyl; X is chlorine atom or bromine atom; and Y is chlorine ion, bromine ion, dichlorophosphate ion, dibromophosphate ion, chlorosulfonate ion, bromosulfonate ion, chlorooxalate ion or bromooxalate ion.Type: GrantFiled: September 26, 2000Date of Patent: June 11, 2002Assignee: Otsuka Kagaku Kabushiki KaishaInventors: Daisuke Suzuki, Ryo Kikuchi, Masaru Yasui
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Patent number: 6399770Abstract: A process for preparing a &bgr;-hydroxyester comprising reducing a &bgr;-keto ester in the presence of a salt of ammonium borohydride.Type: GrantFiled: June 6, 2000Date of Patent: June 4, 2002Assignee: Otsuka Kagaku Kabushiki KaishaInventor: Yutaka Kameyama
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Patent number: 6372825Abstract: The present invention provides an aqueous solution of an epoxy resin and a solid thereof, which is obtained by the following manner that an epoxy compound or a solution of the epoxy compound in organic solvent, and an amine compound of the formula (1), an aqueous solution thereof, a solution of the amine compound in organic solvent, or a solution thereof in a mixture of water and organic solvent, are mixed together so that the epoxy compound and the amine compound are reacted or polymerized to obtain a solution of an epoxy resin, to which water is added and heated to remove the organic solvent and unreacted amine compound, and a process for preparing the same NH2N(R1)(R2) (1) wherein R1 and R2 are the same or different and each is alkyl having 1 to 6 carbon atoms, alkylene having 2 to 11 carbon atoms or a group represented by —R3—N(R4)—R5— which are formed when both are bonded, R3 and R5 are the same or different and each is alkylene having 1 to 6 carbon atoms, and R4 is aType: GrantFiled: May 9, 2000Date of Patent: April 16, 2002Assignee: Otsuka Kagaku Kabushiki KaishaInventors: Yoshihisa Tomotaki, Takashi Kitajima, Keiichiro Ishikawa, Akihiro Nabeshima, Tomohiro Furuichi