Patents by Inventor Akinori Oka
Akinori Oka has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8372300Abstract: An additive of the formula (1) for use in electrolytic solutions wherein A is —CH(X)— or —C?C(X)—, X being hydrogen, halogen, alkyl having 1 to 4 carbon atoms, alkoxycarbonyl having 2 to 5 carbon atoms, benzoyl or alkoxycarbonylalkyl having 3 to 9 carbon atoms, Q1 and Q2 are the same or different and are each alkyl having 1 to 6 carbon atoms, alkoxyl having 1 to 4 carbon atoms, alkoxycarbonylalkyl having 3 to 9 carbon atoms or amino having as a substituent alkyl having 1 to 4 carbon atoms, and A, Q1 and Q2 may form a ring structure.Type: GrantFiled: March 13, 2012Date of Patent: February 12, 2013Assignee: Otsuka Chemical Co., Ltd.Inventors: Akinori Oka, Hiroaki Shima, Shoji Hiketa, Yoshinobui Abe, Akihiro Nabeshima, Masatoshi Uetani
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Publication number: 20120170172Abstract: An additive of the formula (1) for use in electrolytic solutions wherein A is —CH(X)— or —C?C(X)—, X being hydrogen, halogen, alkyl having 1 to 4 carbon atoms, alkoxycarbonyl having 2 to 5 carbon atoms, benzoyl or alkoxycarbonylalkyl having 3 to 9 carbon atoms, Q1 and Q2 are the same or different and are each alkyl having 1 to 6 carbon atoms, alkoxyl having 1 to 4 carbon atoms, alkoxycarbonylalkyl having 3 to 9 carbon atoms or amino having as a substituent alkyl having 1 to 4 carbon atoms, and A, Q1 and Q2 may form a ring structure.Type: ApplicationFiled: March 13, 2012Publication date: July 5, 2012Inventors: Akinori OKA, Hiroaki Shima, Shoji Hiketa, Yoshinobui Abe, Akihiro Nabeshima, Masatoshi Uetani
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Publication number: 20120121496Abstract: A hydrazine-fixing group such as a ketone group, a formyl group, a chlormethyl group or an amide group, which is capable of releasably fixing hydrazine, is introduced into a side chain of a synthetic resin, and hydrazine is fixed to the hydrazine-fixing group. Since a hydrazine storage resin of the present invention has a hydrazine-releasable group capable of releasing hydrazine, it is able to store hydrazine stably. In addition, hydrazine can be supplied by releasing hydrazine from the hydrazine-releasable group. Consequently, the hydrazine storage resin can be widely used in various industrial fields requiring supply of hydrazine.Type: ApplicationFiled: January 26, 2012Publication date: May 17, 2012Applicants: OTSUKA CHEMICAL CO., LTD., DAIHATSU MOTOR CO., LTD., SANYO CHEMICAL INDUSTRIES, LTD.Inventors: Masatoshi TANIGUCHI, Akinori OKA, Takashi KITAJIMA, Ken SONOGI, Masaaki OKA, Hirohisa TANAKA, Koji YAMADA, Koichiro ASAZAWA
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Patent number: 8163195Abstract: An additive of the formula (1) for use in electrolytic solutions wherein A is —CH(X)— or —C?C(X)—, X being hydrogen, halogen, alkyl having 1 to 4 carbon atoms, alkoxycarbonyl having 2 to 5 carbon atoms, benzoyl or alkoxycarbonylalkyl having 3 to 9 carbon atoms, Q1 and Q2 are the same or different and are each alkyl having 1 to 6 carbon atoms, alkoxyl having 1 to 4 carbon atoms, alkoxycarbonylalkyl having 3 to 9 carbon atoms or amino having as a substituent alkyl having 1 to 4 carbon atoms, and A, Q1 and Q2 may form a ring structure.Type: GrantFiled: June 29, 2007Date of Patent: April 24, 2012Assignee: Otsuka Chemical Co., Ltd.Inventors: Akinori Oka, Hiroaki Shima, Shoji Hiketa, Yoshinobu Abe, Akihiro Nabeshima, Masatoshi Uetani
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Patent number: 8029690Abstract: A process for preparing a highly pure quaternary ammonium salt comprising: (1) adding a quaternary ammonium hydroxide salt or quaternary ammonium carbonate to a quaternary ammonium salt containing a protonic acid salt of a tertiary amine as an impurity and thereby neutralizing the tertiary amine protonic acid salt with the quaternary ammonium hydroxide salt or carbonate to convert the acid salt to a tertiary amine and water and to convert the quaternary ammonium hydroxide salt or carbonate to a quaternary ammonium salt at the same time, and (2) removing the tertiary amine and water produced from the system.Type: GrantFiled: September 19, 2007Date of Patent: October 4, 2011Assignees: Otsuka Chemical Co., Ltd., Stella Chemifa CorporationInventors: Tetsuo Nishida, Kazutaka Hirano, Akinori Oka, Yoshinobu Abe, Akihiro Nabeshima
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Patent number: 8029689Abstract: A process for preparing a high-purity quaternary ammonium salt comprising: (1) adding an oxide or hydroxide of a Group 1, 2, 12 or 13 metal to a quaternary ammonium salt containing a protonic acid salt of a tertiary amine as an impurity and thereby neutralizing the tertiary amine protonic acid salt with the metal oxide or hydroxide to convert the acid salt to a tertiary amine and water and to convert the metal oxide or hydroxide to a metal salt at the same time, and (2) removing the tertiary amine, water and metal salt produced from the system.Type: GrantFiled: September 18, 2007Date of Patent: October 4, 2011Assignees: Otsuka Chemical Co., Ltd., Stella Chemifa CorporationInventors: Tetsuo Nishida, Kazutaka Hirano, Akinori Oka, Yoshinobu Abe, Akihiro Nabeshima
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Patent number: 7875732Abstract: A quaternary ammonium salt of the formula (1) wherein R1 is straight-chain or branched alkyl having 1 to 4 carbon atoms, R2 is straight-chain or branched alkyl having 1 to 3 carbon atoms, and X? is CF3CO2?, CF3SO3BF3?, ClBF3?, AlF4—, CF3BF3?, C2F5BF3—, N(SO2F)2?, PF6?, AsF6— or SbF6?.Type: GrantFiled: January 12, 2006Date of Patent: January 25, 2011Assignees: Otsuka Chemical Co., Ltd., Stella Chemifa CorporationInventors: Tetsuo Nishida, Kazutaka Hirano, Megumi Tomisaki, Yasutaka Tashiro, Hitoshi Tsurumaru, Akihiro Nabeshima, Yoshinobu Abe, Hiroaki Tokuda, Akinori Oka
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Patent number: 7854854Abstract: A quaternary ammonium salt of the formula (1), electrolytic solution and electrochemical device using the salt wherein R1 is straight-chain or branched alkyl having 1 to 4 carbon atoms, R2 is straight-chain or branched alkyl having 1 to 3 carbon atoms, and X? is N(CN)2?, SCN?, NO3?, NCO? or NO2?.Type: GrantFiled: January 12, 2006Date of Patent: December 21, 2010Assignees: Otsuka Chemical Co., Ltd., Stella Chemifa CorporationInventors: Tetsuo Nishida, Kazutaka Hirano, Megumi Tomisaki, Akihiro Nabeshima, Yoshinobu Abe, Hiroaki Tokuda, Akinori Oka
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Publication number: 20100044617Abstract: A process for preparing a high-purity quaternary ammonium salt comprising: (1) adding an oxide or hydroxide of a Group 1, 2, 12 or 13 metal to a quaternary ammonium salt containing a protonic acid salt of a tertiary amine as an impurity and thereby neutralizing the tertiary amine protonic acid salt with the metal oxide or hydroxide to convert the acid salt to a tertiary amine and water and to convert the metal oxide or hydroxide to a metal salt at the same time, and (2) removing the tertiary amine, water and metal salt produced from the system.Type: ApplicationFiled: September 18, 2007Publication date: February 25, 2010Inventors: Tetsuo Nishida, Kazutaka Hirano, Akinori Oka, Yoshinobu Abe, Akihiro Nabeshima
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Publication number: 20100038578Abstract: A quaternary ammonium salt of the formula (1), electrolytic solution and electrochemical device using the salt wherein R1 is straight-chain or branched alkyl having 1 to 4 carbon atoms, R2 is straight-chain or branched alkyl having 1 to 3 carbon atoms, and X? is N(CN)2?, SCN?, NO3?, NCO? or NO2?.Type: ApplicationFiled: January 12, 2006Publication date: February 18, 2010Inventors: Tetsuo Nishida, Kazutaka Hirano, Megumi Tomisaki, Akihiro Nabeshima, Yoshinobu Abe, Hiroaki Tokuda, Akinori Oka
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Publication number: 20090318662Abstract: A hydrazine-fixing group such as a ketone group, a formyl group, a chlormethyl group or an amide group, which is capable of releasably fixing hydrazine, is introduced into a side chain of a synthetic resin, and hydrazine is fixed to the hydrazine-fixing group. Since a hydrazine storage resin of the present invention has a hydrazine-releasable group capable of releasing hydrazine, it is able to store hydrazine stably. In addition, hydrazine can be supplied by releasing hydrazine from the hydrazine-releasable group. Consequently, the hydrazine storage resin can be widely used in various industrial fields requiring supply of hydrazine.Type: ApplicationFiled: July 9, 2007Publication date: December 24, 2009Applicants: OTSUKA CHEMICAL CO., LTD., SANYO CHEMICAL INDUSTRIES, LTD., DAIHATSU MOTOR CO., LTD.Inventors: Masatoshi Taniguchi, Akinori Oka, Takashi Kitajima, Ken Sonogi, Masaaki Oka, Hirohisa Tanaka, Koji Yamada, Koichiro Asazawa
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Publication number: 20090317670Abstract: Hydrazine supply device (1) includes hydrazine fixing bath (2) which releasably fixes hydrazine and water/alkali, tank (3) for supplying water or an alkaline aqueous solution so as to release the hydrazine fixed in the hydrazine fixing bath (2), thereby achieving stable storage and supply of hydrazine. Thus, the device can be widely used in various industrial fields requiring the supply of hydrazine. Further, each of fuel cell system (10) and vehicle (14) comprises the hydrazine supply device (1) and fuel cell (13), thereby achieving safe utilization of hydrazine as fuel and reduction of burdens on the environmental load.Type: ApplicationFiled: July 9, 2007Publication date: December 24, 2009Applicants: OTSUKA CHEMICAL CO., LTD., DAIHATSU MOTOR CO., LTD.Inventors: Masatoshi Taniguchi, Akinori Oka, Takashi Kitajima, Ken Sonogi, Hirohisa Tanaka, Koji Yamada, Koichiro Asazawa
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Publication number: 20090309060Abstract: An additive of the formula (1) for use in electrolytic solutions wherein A is —CH(X)— or —C?C(X)—, X being hydrogen, halogen, alkyl having 1 to 4 carbon atoms, alkoxycarbonyl having 2 to 5 carbon atoms, benzoyl or alkoxycarbonylalkyl having 3 to 9 carbon atoms, Q1 and Q2 are the same or different and are each alkyl having 1 to 6 carbon atoms, alkoxyl having 1 to 4 carbon atoms, alkoxycarbonylalkyl having 3 to 9 carbon atoms or amino having as a substituent alkyl having 1 to 4 carbon atoms, and A, Q1 and Q2 may form a ring structure.Type: ApplicationFiled: June 29, 2007Publication date: December 17, 2009Inventors: Akinori Oka, Hiroaki Shima, Shoji Hiketa, Yoshinobui Abe, Akihiro Nabeshima, Masatoshi Uetani
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Publication number: 20090272933Abstract: A process for preparing a highly pure quaternary ammonium salt comprising: (1) adding a quaternary ammonium hydroxide salt or quaternary ammonium carbonate to a quaternary ammonium salt containing a protonic acid salt of a tertiary amine as an impurity and thereby neutralizing the tertiary amine protonic acid salt with the quaternary ammonium hydroxide salt or carbonate to convert the acid salt to a tertiary amine and water and to convert the quaternary ammonium hydroxide salt or carbonate to a quaternary ammonium salt at the same time, and (2) removing the tertiary amine and water produced from the system.Type: ApplicationFiled: September 19, 2007Publication date: November 5, 2009Inventors: Tetsuo Nishida, Kazutaka Hirano, Akinori Oka, Yoshinobu Abe, Akihiro Nabeshima
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Publication number: 20080050657Abstract: A quaternary ammonium salt of the formula (1) wherein R1 is straight-chain or branched alkyl having 1 to 4 carbon atoms, R2 is straight-chain or branched alkyl having 1 to 3 carbon atoms, and X? is CF3CO2?, CF3SO3BF3?, ClBF3?, AlF4?, CF3BF3?, C2F5BF3?, N(SO2F)2?, PF6?, AsF6? or SbF6?.Type: ApplicationFiled: January 12, 2006Publication date: February 28, 2008Inventors: Tetsuo Nishida, Kazutaka Hirano, Megumi Tomisaki, Yasutaka Tashiro, Hitoshi Tsurumaru, Akihiro Nabeshima, Yoshinobu Abe, Hiroaki Tokuda, Akinori Oka
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Publication number: 20050176858Abstract: A rubber composition comprising 100 parts by weight of a rubber ingredient comprising natural rubber and/or a synthetic rubber, 0.1 to 50 parts by weight of at least one nitrogenous compound selected among benzimidazole derivatives having a specific structure and hydrazide derivatives having a specific structure, and 0.1 to 50 parts by weight of a protonic acid; and a pneumatic tire including a member formed from this rubber composition. The rubber composition enables excellent gripping performance while attaining intact productivity. The pneumatic tire produced from this rubber composition, in particular, the tire whose tread has been formed from the composition, has significantly improved gripping performance in high-speed driving, etc.Type: ApplicationFiled: February 17, 2003Publication date: August 11, 2005Inventors: Daisuke Nohara, Akinori Oka, Ken Sonoki, Syuichi Kijima, Jun Igarashi
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Patent number: 6667356Abstract: Provided is a rubber composition comprising 100 parts by weight of a rubber component comprising at least one selected from the group consisting of natural rubber and synthetic rubbers and 0.Type: GrantFiled: November 25, 2002Date of Patent: December 23, 2003Assignees: Bridgestone Corporation, Otsuka Chemical Co., Ltd.Inventors: Daisuke Nohara, Jingo Shirasaka, Akinori Oka, Ken Sonogi, Hiroaki Tokuda
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Publication number: 20030134947Abstract: Provided is a rubber composition comprising 100 parts by weight of a rubber component comprising at least one selected from the group consisting of natural rubber and synthetic rubbers and 0.Type: ApplicationFiled: November 25, 2002Publication date: July 17, 2003Applicant: BRIDGESTONE CORPORATION, OTSUKA CHEMICAL CO., LTD.Inventors: Daisuke Nohara, Jingo Shirasaka, Akinori Oka, Ken Sonogi, Hiroaki Tokuda
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Patent number: 6515055Abstract: Provided is a rubber composition comprising 100 parts by weight of a rubber component comprising at least one selected from the group consisting of natural rubber and synthetic rubbers and 0.Type: GrantFiled: November 17, 2000Date of Patent: February 4, 2003Assignees: Bridgestone Corporation, Otsuka Chemical Co., Ltd.Inventors: Daisuke Nohara, Jingo Shirasaka, Akinori Oka, Ken Sonogi, Hiroaki Tokuda
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Patent number: 6380288Abstract: A rubber composition prepared by compounding 0.05 to 20 parts by weight of at least one selected from substituted hydrazide compounds represented by the following Formulas (I) to (IV) per 100 parts by weight of a rubber component comprising at least one rubber selected from the group consisting of natural rubber and synthetic rubber, and a pneumatic tire using the same: wherein A represents one selected from the group consisting of an aromatic group which may have a substituent, a hydantoin ring which may have a substituent, and a saturated or unsaturated linear hydrocarbon having 1 to 18 carbon atoms; Y represents hydrogen, an amino group, an alkyl group having 1 to 18 carbon atoms, a cycloalkyl group, an alkenyl group, an aromatic group, a pyridyl group or hydrazino group; and R1 to R11 each represent hydrogen, an alkyl group having 1 to 18 carbon atoms, a cycloalkyl group or an aromatic group.Type: GrantFiled: July 17, 2000Date of Patent: April 30, 2002Assignees: Bridgestone Corporation, Otsuka Chemical Co., Ltd.Inventors: Masahiro Hojo, Tomohiro Kusano, Akihiko Matsue, Kenichi Sugimoto, Shigeki Kamo, Yoshihisa Tomotaki, Akinori Oka, Ken Hirayama