Patents by Inventor Yasumasa Komatsu
Yasumasa Komatsu 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: 5283286Abstract: A thermoplastic resin composition is prepared by blending 50-95 wt. % of a copolymer (A) of 10-75 wt. % of .alpha.-methyl styrene, 10-60 wt. % of methyl methacrylate, 5-35 wt. % of acrylonitrile and 0-20 wt. % of a monomer copolymerizable therewith; and 5-50 wt. % of a graft copolymer (B) comprising 50-85 wt. parts of a butadiene-based rubber polymer and 15-50 wt. parts of a vinyl monomer graft-polymerized onto the rubber polymer. The butadiene-based rubber polymer includes 50-98 wt. % of butadiene, 2-50 wt. % of an aromatic polycyclic vinyl monomer represented by a formula (I) below and 0-20 wt. % of a monomer copolymerizable therewith: ##STR1## wherein R denotes an optionally substituted biphenylyl or naphthyl group, and R.sub.1 denotes a hydrogen atom or a methyl group.Type: GrantFiled: May 8, 1992Date of Patent: February 1, 1994Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Yosuke Takahashi, Yasumasa Komatsu, Hiroshi Hagiwara, Takayuki Katto
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Patent number: 4748205Abstract: A thermoplastic resin composition of high heat resistance and high impact resistance is described, comprising: (A) 50 to 90% by weight of a copolymer prepared by copolymerization of 10 to 35% by weight of acrylonitrile, 60 to 85% by weight of a monomer mixture of 2-isopropenylnaphthalene (2-IPN) and .alpha.-methylstyrene (.alpha.-MeSt), the proportion of 2-IPN being 5 to 70% by weight based on the total weight of 2-IPN and .alpha.-MeSt, and 0 to less than 10% by weight of a vinyl monomer copolymerizable with the foregoing monomers; and (B) 10 to 50% by weight of a graft copolymer prepared by polymerizing 15 to 50 parts by weight of at least one monomer selected from the group consisting of aromatic vinyl compounds, vinyl cyanides, methacrylic acid alkyl esters, and acrylic acid alkyl esters in the presence of 50 to 85 parts by weight of a butadiene- or alkyl acrylate-based rubber, the sum of the graft and rubber components being 100 parts by weight.Type: GrantFiled: June 16, 1987Date of Patent: May 31, 1988Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Takayuki Katto, Yasumasa Komatsu, Zenya Shiiki
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Patent number: 4732935Abstract: A thermoplastic resin composition of high heat resistance and high impact resistance in described, comprising: (A) 5 to 85% by weight of a copolymer prepared from 40 to 85% by weight of a monomer mixture of 2-isopropenylnaphthalene (2-IPN) and .alpha.-methylstyrene (.alpha.-MeSt), the proportion of 2-IPN being 5 to 70% by weight based on the total weight of 2-IPN and .alpha.-MeSt, 7.Type: GrantFiled: August 29, 1986Date of Patent: March 22, 1988Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Takayuki Katto, Yasumasa Komatsu, Zenya Shiiki
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Patent number: 4701495Abstract: A thermoplastic resin composition of high heat resistance and high impact resistance is described, comprising: (A) 50 to 90% by weight of a copolymer prepared by copolymerization of 10 to 35% by weight of acrylonitrile, 60 to 85% by weight of a monomer mixture of 2-isopropenylnaphthalene (2-IPN) and .alpha.-methylstyrene (.alpha.-MeSt), the proportion of 2-IPN being 5 to 70% by weight based on the total weight of 2-IPN and .alpha.-MeSt, and 0 to less than 10% by weight of a vinyl monomer copolymerizable with the foregoing monomers; and (B) 10 to 50% by weight of a graft copolymer prepared by polymerizing 15 to 50 parts by weight of at least one monomer selected from the group consisting of aromatic vinyl compounds, vinyl cyanides, methacrylic acid alkyl esters, and acrylic acid alkyl esters in the presence of 50 to 85 parts by weight of a butadiene- or alkyl acrylate-based rubber, the sum of the graft and rubber components being 100 parts by weight.Type: GrantFiled: February 26, 1986Date of Patent: October 20, 1987Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Takayuki Katto, Yasumasa Komatsu, Zenya Shiiki
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Patent number: 4636553Abstract: A thermoplastic resin composition of high heat resistance and high impact resistance is described, comprising: (A) 5 to 85% by weight of a copolymer prepared from 40 to 85% by weight of a monomer mixture of 2-isopropenylnaphthalene (2-IPN) and .alpha.-methylstyrene (.alpha.-MeSt), the proportion of 2-IPN being 5 to 70% by weight based on the total weight of 2-IPN and .alpha.-MeSt, 7.Type: GrantFiled: June 8, 1984Date of Patent: January 13, 1987Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Takayuki Katto, Yasumasa Komatsu, Zenya Shiiki
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Patent number: 4578526Abstract: A reliable and inexpensive solar module is disclosed. The solar module comprises a thin-film type photovoltaic cell array formed on a glass superstrate, leaving a margin of an appropriate width along the periphery of the glass superstrate, and a resin layer coated on the photovoltaic cell array and the peripheral margin of the glass superstrate. The solar module further comprises a backcover adhered by the resin layer to cover the photovoltaic cell array and the peripheral margin of the glass superstrate. The resin layer is preferably made of a fluoropolymer derived from a compound containing a perfluoroalkylene and active hydrogen atoms.Type: GrantFiled: July 31, 1984Date of Patent: March 25, 1986Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Akihiko Nakano, Hitoshi Matsumoto, Hiroshi Uda, Yasumasa Komatsu, Kiyoshi Kuribayashi, Seiji Ikegami
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Patent number: 4447578Abstract: A thermoplastic resin composition having high heat resistance coupled with high impact resistance is obtained by combining a predominant amount of (A) a copolymer of methyl methacrylate, acrylonitrile, 2-isopropenylnaphthalene and .alpha.-methylstyrene, and (B) a graft copolymer of methyl methacrylate, optionally with styrene and acrylonitrile, on a butadiene rubber.Type: GrantFiled: December 20, 1982Date of Patent: May 8, 1984Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Takayuki Katto, Yasumasa Komatsu, Zenya Shiiki
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Patent number: 4390382Abstract: Method of manufacturing a tone arm by superposing a sheet of graphite flakes bound with resin, on a carbon fiber prepreg, winding the resultant double layer product around a core, heat-hardening the resultant assembly, and removing the core to form a pipe-shaped tone arm.Type: GrantFiled: July 8, 1981Date of Patent: June 28, 1983Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Shunsuke Matsuda, Yasumasa Komatsu