Patents by Inventor Tadaoki Okumoto
Tadaoki Okumoto 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: 5348929Abstract: The invention relates to a process for producing a fuel absorbent, which comprises the steps of: dissolving an organic polymer having a function of trapping fuel in a solvent to produce a polymer solution; adding a crosslinking agent to said polymer solution to allow said organic polymer to react in the presence of said crosslinking agent; and collecting, after the completion of the crosslinking reaction, the resultant fine polymer gel particles.The invention also relates to a porous fuel absorbent produced by the above process comprised of fine cross-linked organic polymer formed into particles. The above fuel absorbent along with coatings and a carrier may be used to control fuel evaporation loss in automobile canisters or boiler fuel tanks.Type: GrantFiled: November 2, 1992Date of Patent: September 20, 1994Assignee: Toyoda Gosei Co., Ltd.Inventors: Hiroshi Ito, Koji Sasaki, Tadaoki Okumoto, Takashi Ohta, Mitsumasa Matsushita, Norio Sato
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Patent number: 5248738Abstract: A vibration-damping resin molded product which can be used as an engine part or attachment in a motor vehicle, the resin molded product being made of a blend of nylons comprising:(A) 5 to 90% by weight, based on the total amount of the blend, of a nylon 6 resin,(B) 5 to 90% by weight, based on the total amount of the blend, of a xylylenediamine-based nylon resin, and(C) 5 to 90% by weight, based on the total amount of the blend, of a nylon 66 resin. Optionally, the resin molded product can contain an inorganic filler (D) in an amount of 10 to 150 parts by weight, per 100 parts by weight of the above-described blend of nylons.Type: GrantFiled: October 18, 1990Date of Patent: September 28, 1993Assignee: Toyoda Gosei Co., Ltd.Inventors: Koichi Sato, Tadaoki Okumoto, Koji Sasaki, Hidetoshi Ishihara
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Patent number: 5174938Abstract: The invention relates to a process for producing a fuel absorbent, which comprises the steps of: dissolving an organic polymer having a function of trapping fuel in a solvent to produce a polymer solution; adding a crosslinking agent to said polymer solution to allow said organic polymer to react in the presence of said crosslinking agent; and collecting, after the completion of the crosslinking reaction, the resultant fine polymer gel particles. The invention also relates to a porous fuel absorbent produced by the above process comprised of fine cross-linked organic polymer formed into particles. The above fuel absorbent along with the coatings and a carrier may be used to control fuel evaporation loss in automobile canisters or boiler fuel tanks.Type: GrantFiled: April 19, 1991Date of Patent: December 29, 1992Assignees: Toyoda Gosei Co., Ltd., Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Hiroshi Ito, Koji Sasaki, Tadaoki Okumoto, Takashi Ohta, Mitsumasa Matsushita, Norio Sato
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Patent number: 4980407Abstract: A polyamide resin composition is disclosed, comprising as main components,(a) 5 to 90% by weight of a nylon 6 resin,(b) 5 to 90% by weight of an aromatic diamine-based nylon resin, and(c) 5 to 90% by weight of a nylon 66 resin, based on the total amount of components (a), (b) and (c).Type: GrantFiled: October 20, 1989Date of Patent: December 25, 1990Assignee: Toyoda Gosei Co., Ltd.Inventors: Tadaoki Okumoto, Koji Sasaki, Junji Koizumi, Koichi Sato
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Patent number: 4650834Abstract: A vulcanizable epoxy group-containing elastomer composition comprising an elastomer containing epoxy groups, a polycarboxylic acid having at least 2 carboxyl groups in the molecule, and either a quaternary ammonium salt or a quaternary phosphonium salt.Type: GrantFiled: July 2, 1985Date of Patent: March 17, 1987Assignees: Nippon Zeon Co., Ltd., Toyoda Gosei Co., Ltd.Inventors: Shigelu Yagishita, Kiyoshi Hosoya, Tadaoki Okumoto, Masatoshi Sugimoto
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Patent number: 4645788Abstract: The cold resistance of chloroprene rubber can be improved by blending an ester derived from a specified glycol component and a specified fatty acid component without any adverse effect upon the other physical and chemical properties of the rubber. This ester is not extracted with oily matters such as oil or grease, so that the resulting chloroprene rubber composition hardly exhibits a decrease in cold resistance even after extraction with oily matters.Type: GrantFiled: December 6, 1985Date of Patent: February 24, 1987Assignees: Kao Corporation, Toyoda Gosei Co. Ltd.Inventors: Tadaoki Okumoto, Rikizo Nakata, Masayoshi Ichikawa, Masaaki Tsuchihashi, Koichi Sakai
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Patent number: 4573693Abstract: A dust boot for a constant velocity universal joint has a bellows-shaped boot made of chloroprene-rubber substantially excluding wax and a polyamide resin coating layer having excellent wear resistance, which is formed on the outer surface of the bellows-shaped boot without peeling. Between the coating layer and the polyamide resin boot is formed a primer layer made of a mixture of chloroprene-rubber and isocyanate compound so that the coating layer does not peel off from the bellow-shaped boot.Type: GrantFiled: April 24, 1985Date of Patent: March 4, 1986Assignee: Toyoda Gosei Co., Ltd.Inventors: Rikizo Nakata, Tadaoki Okumoto, Mikio Ukai, Takamasa Suzuki, Tomoyoshi Yamada
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Patent number: 4491621Abstract: An oil resistant diaphragm having a liquid contacting surface made of a vulcanized rubber composition of, or composed mainly of, partially hydrogenated unsaturated nitrile-conjugated diene copolymer rubber in which at least 50% of the conjugated diene units is hydrogenated. This diaphragm is superior in resistance to deteriorated gasoline and low temperature, and is suitable for the automobile fuel pump.Type: GrantFiled: November 19, 1982Date of Patent: January 1, 1985Assignees: Toyoda Gosei Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Tadaoki Okumoto, Masatoshi Sugimoto, Noriyuki Horiuchi, Seiichi Sahara, Tetsuo Yamada, Kinrou Hashimoto, Masayoshi Ichikawa, Fujio Ninomiya
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Patent number: 4486480Abstract: An oil resistant rubber hose having an internal layer made of a vulcanized rubber composition of, or composed mainly of, partially hydrogenated unsaturated nitrile-conjugated diene copolymer rubber in which at least 50% of the conjugated diene units is hydrogenated. This rubber hose is superior in resistance to deteriorated gasoline and low temperature, and is suitable for the automobile fuel line.Type: GrantFiled: November 19, 1982Date of Patent: December 4, 1984Assignees: Toyoda Gosei Co., Ltd., Toyota Jidosha Kabushiki KaishaInventors: Tadaoki Okumoto, Masatoshi Sugimoto, Takashi Kawazoe, Seiichi Sahara, Tetsuo Yamada, Kinrou Hashimoto, Masayoshi Ichikawa, Kenichi Funato
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Patent number: 4087249Abstract: A pyrolysis apparatus comprising a pyrolysis heater and a pyrolysis tube, wherein the pyrolysis heater is of the vertical type. A sample basket being is disposed in the central portion in the lengthwise direction of the pyrolysis heater. A sample pyrolysis position is disposed inside the tube. A sample basket holder is provided at the upper end portion of the pyrolysis tube. The holder is provided with a detachable device for holding a sample basket connecting rod which facilitates free dropping of the sample basket to the sample pyrolysis position and a slit means are provided right under the central heating portion inside the pyrolysis tube so that the sample basket does not drop any more therefrom.Type: GrantFiled: December 20, 1976Date of Patent: May 2, 1978Assignee: Toyoda Gosei Co., Ltd.Inventors: Tadaoki Okumoto, Tsugio Takeuchi, Shin Tsuge