Patents by Inventor Takashi Kurata

Takashi Kurata 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).

  • Patent number: 6849689
    Abstract: Rubber-reinforced thermoplastic resins containing a copolymer resin (A1) obtained by polymerizing a vinyl monomer (b1) in the presence of an acrylic rubber-like polymer (a), or a mixture of copolymer resin (A1) and a (co)polymer (A2) of a vinyl monomer (b2). Acrylic rubber-like polymer (a) contains 50 to 98% by weight of acrylic rubber-like polymer particles (a1) which have a particle size of less than 350 nm and 2 to 50% by weight of acrylic rubber-like polymer particles (a2) which have a particle size of not less than 350 nm. The amount of the acrylic rubber-like polymer (a) is 5 to 80% by weight based on the rubber-reinforced thermoplastic resin.
    Type: Grant
    Filed: March 26, 2002
    Date of Patent: February 1, 2005
    Assignee: Techno Polymer Co., Ltd.
    Inventors: Gou Yamada, Hiromu Akatsuka, Takashi Kurata
  • Publication number: 20020188066
    Abstract: The present invention relates to a rubber-reinforced thermoplastic resin comprising a copolymer resin (A1) obtained by polymerizing a vinyl monomer (b1) in the presence of an acrylic rubber-like polymer (a), or a mixture of said copolymer resin (A1) and a (co)polymer (A2) of a vinyl monomer (b2),
    Type: Application
    Filed: March 26, 2002
    Publication date: December 12, 2002
    Inventors: Gou Yamada, Hiromu Akatsuka, Takashi Kurata
  • Patent number: 6448342
    Abstract: The present invention relates to a transparent butadiene-based rubber-reinforced resin produced by graft-polymerizing monomer components (b) comprising as main components an aromatic vinyl compound, a vinyl cyanide compound and an acrylic or methacrylic acid ester in the presence of particles of a butadiene-based rubber (a), said butadiene-based rubber-reinforced resin comprising, when observed by an electron microscope, a rubber phase having an average particle size of 150 to 350 nm and containing particles having a particle size of less than 150 nm in an amount of not more than 30% by weight and particles having a particle size of more than 350 nm in an amount of not more than 30% by weight; and containing acetone solubles having an intrinsic viscosity [&eegr;] of 0.2 to 0.4 dl/g when measured at 30° C. in methyl ethyl ketone.
    Type: Grant
    Filed: April 18, 2001
    Date of Patent: September 10, 2002
    Assignee: Techno Polymer Co., Ltd.
    Inventors: Takashi Kurata, Shinobu Fukumura, Yoshio Nakanishi, Junichirou Nitta
  • Patent number: 6337371
    Abstract: The present invention relates to a thermoplastic resin composition with excellent long-term heat-aging properties, comprising: (I) 10 to 45% by weight of a rubber-modified thermoplastic resin obtained by graft polymerizing at least one monomer selected from the group consisting of aromatic vinyl compounds, vinyl cyanide compounds and other vinyl monomers copolymerizable therewith in the presence of a rubber-like polymer; (II) 5 to 30% by weight of a thermoplastic resin obtained by copolymerizing the monomers comprising an aromatic vinyl compound, a vinyl cyanide compound and optionally other vinyl monomer copolymerizable therewith; and (III) 50 to 70% by weight of a polycarbonate resin, the content of the vinyl cyanide compound in the whole produced composition being 3 to 12% by weight.
    Type: Grant
    Filed: February 5, 2001
    Date of Patent: January 8, 2002
    Assignee: Techno Polymer Co., Ltd.
    Inventors: Takashi Kurata, Yukio Hosaka
  • Publication number: 20010051688
    Abstract: The present invention relates to a transparent butadiene-based rubber-reinforced resin produced by graft-polymerizing monomer components (b) comprising as main components an aromatic vinyl compound, a vinyl cyanide compound and an acrylic or methacrylic acid ester in the presence of particles of a butadiene-based rubber (a), said butadiene-based rubber-reinforced resin comprising, when observed by an electron microscope, a rubber phase having an average particle size of 150 to 350 nm and containing particles having a particle size of less than 150 nm in an amount of not more than 30% by weight and particles having a particle size of more than 350 nm in an amount of not more than 30% by weight; and containing acetone solubles having an intrinsic viscosity [&eegr;] of 0.2 to 0.4 dl/g when measured at 30° C. in methyl ethyl ketone.
    Type: Application
    Filed: April 18, 2001
    Publication date: December 13, 2001
    Inventors: Takashi Kurata, Shinobu Fukumura, Yoshio Nakanishi, Junichirou Nitta
  • Publication number: 20010011116
    Abstract: The present invention relates to a thermoplastic resin composition with excellent long-term heat-aging properties, comprising:
    Type: Application
    Filed: February 5, 2001
    Publication date: August 2, 2001
    Applicant: Techno Polymer Co., Ltd.
    Inventors: Takashi Kurata, Yukio Hosaka
  • Patent number: 6262173
    Abstract: The present invention relates to a thermoplastic resin composition with excellent long-term heat-aging properties, comprising: (I) 10 to 45% by weight of a rubber-modified thermoplastic resin obtained by graft polymerizing at least one monomer selected from the group consisting of aromatic vinyl compounds, vinyl cyanide compounds and other vinyl monomers copolymerizable therewith in the presence of a rubber-like polymer; (II) 5 to 30% by weight of a thermoplastic resin obtained by copolymerizing the monomers comprising an aromatic vinyl compound, a vinyl cyanide compound and optionally other vinyl monomer copolymerizable therewith; and (III) 50 to 70% by weight of a polycarbonate resin, the content of the vinyl cyanide compound in the whole produced composition being 3 to 12% by weight.
    Type: Grant
    Filed: July 12, 1999
    Date of Patent: July 17, 2001
    Assignee: Techno Polymer Co., Ltd.
    Inventors: Takashi Kurata, Yukio Hosaka
  • Patent number: 5274053
    Abstract: A process for producing a thermoplastic resin which comprises graft-polymerizing at least one vinyl monomer (IV) onto a modified polyorganosiloxane (III) obtained by condensation of from 90 to 99.8% by weight of an organosiloxane (I) having a structural unit represented by the formula R.sup.1.sub.n SiO.sub.(4-n)/2, wherein R.sup.1 represents a substituted or unsubstituted monovalent hydrocarbon group and n is an integer of from 0 to 3, and from 10 to 0.2% by weight of a graft crosslinking agent (II) having a modified alkoxysilane structure.
    Type: Grant
    Filed: October 26, 1992
    Date of Patent: December 28, 1993
    Assignees: Japan Synthetic Rubber Co., Ltd., Toshiba Silicone Co., Ltd
    Inventors: Takashi Kurata, Yoichi Kamoshida, Yoshiaki Kawamura, Makoto Matsumoto, Junichiro Watanabe, Michio Zembayashi
  • Patent number: 5250615
    Abstract: A polyorganosiloxane series thermoplastic resin comprising a graft copolymer obtained from a vinyl monomer and a modified polyorganosiloxane, and a thermoplastic resin composition containing the same. The resin and the composition thereof have excellent slidability, abrasion resistance, weather resistance, cold resistance and impact resistance, and can be applied to new fields such as sliding parts, parts for cold district, outdoor parts, etc.
    Type: Grant
    Filed: June 10, 1992
    Date of Patent: October 5, 1993
    Assignees: Japan Synthetic Rubber Co., Ltd., Toshiba Silicone Co., Ltd.
    Inventors: Yuji Yamamoto, Takashi Kurata, Kazuyoshi Nakazawa, Yusuke Tsuda, Junichiro Watanabe, Makoto Matsumoto, Akitsugu Kurita, Yuichi Funahashi
  • Patent number: 5218014
    Abstract: A thermoplastic resin containing a graft copolymer obtained by graft-copolymerizing at least one vinyl monomer onto colloidal silica-core silicone-shell particles, and a process for producing the thermoplastic resin.A colloidal silica-core silicone-shell particles comprising(A) from 99.9 to 5% by weight of cores which are colloidal silica particles, and(B) from 0.1 to 95% by weight of shells comprising an organosiloxy group represented by the formula ##STR1## wherein R.sup.1 which may be the same or different each represents a substituted or unsubstituted monovalent hydrocarbon group having 1 to 8 carbon atoms, Q represents hydrogen atom or an alkyl group having 1 to 6 carbon atoms, p is an integer of 1 to 3, and q is an integer of 0 to 2, with proviso that (p+q) is an integer of 1 to 3, and/or a polyorganosiloxane represented by the average composition formula ##EQU1## wherein R.sup.
    Type: Grant
    Filed: December 14, 1990
    Date of Patent: June 8, 1993
    Assignees: Toshiba Silicone Co., Ltd., Japan Synthetic Rubber Co., Ltd.
    Inventors: Makoto Matsumoto, Junichiro Watanabe, Takashi Kurata, Noriaki Ijuin, Tateki Furuyama
  • Patent number: 5147947
    Abstract: A polyorganosiloxane series thermoplastic resin comprising a graft copolymer obtained from a vinyl monomer and a modified polyorganosiloxane, and a thermoplastic resin composition containing the same. The resin and the composition thereof have excellent slidability, abrasion resistance, weather resistance, cold resistance and impact resistance, and can be applied to new fields such as sliding parts, parts for cold district, outdoor parts, etc.
    Type: Grant
    Filed: October 31, 1989
    Date of Patent: September 15, 1992
    Assignees: Japan Synthetic Rubber Co., Ltd., Toshiba Silicone Co., Ltd.
    Inventors: Yuji Yamamoto, Takashi Kurata, Kazuyoshi Nakazawa, Yusuke Tsuda, Junichiro Watanabe, Makoto Matsumoto, Akitsugu Kurita, Yuichi Funahashi
  • Patent number: 4877835
    Abstract: A thermoplastic resin composition with superior chemical resistance and impact resistance is disclosed. The composition comprises: 50 to 90% by weight of a rubber-modified styrene thermoplastic resin containing 10 to 60% by weight of .alpha.-methyl styrene, 5 to 48% by weight of an aromatic polyester, and 2 to 10% by weight of an aromatic polycarbonate.
    Type: Grant
    Filed: September 8, 1988
    Date of Patent: October 31, 1989
    Assignee: Japan Synthetic Rubber Co., Ltd.
    Inventors: Yusuke Tsuda, Takashi Kurata, Yoshinobu Suzuki, Yuji Yamamoto
  • Patent number: 4751629
    Abstract: A power regulating system for a portable engine powered AC-DC-AC electric generator system wherein an auxiliary generator winding powers voltage regulation and frequency determining circuitry and controls a thyristor bridge circuit employed for rectifying the output of a three-phase primary winding of the generator.
    Type: Grant
    Filed: May 19, 1987
    Date of Patent: June 14, 1988
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Motohiro Shimizu, Takashi Kurata
  • Patent number: D351135
    Type: Grant
    Filed: February 25, 1993
    Date of Patent: October 4, 1994
    Assignee: Honda Tsushin Kogyo Kabushiki Kaishacals
    Inventor: Takashi Kurata
  • Patent number: D351136
    Type: Grant
    Filed: February 25, 1993
    Date of Patent: October 4, 1994
    Assignee: Honda Tsushin Kogyo Kabushiki Kaishacals
    Inventor: Takashi Kurata