Patents by Inventor Kouji Iwaki

Kouji Iwaki 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: 8563645
    Abstract: Process for preparing a thermoplastic resin composition containing an aromatic polycarbonate resin which may include a thermoplastic resin other than the aromatic polycarbonate resin, a granular talc, and optionally a rubber polymer, a flame retardant or a fluorinated polyolefin. The granular talc has a particle size in which a proportion of a 500 ?m-mesh screen residue thereof is not less than 55% by weight.
    Type: Grant
    Filed: October 1, 2012
    Date of Patent: October 22, 2013
    Assignee: Mitsubishi Engineering-Plastics Corporation
    Inventors: Makoto Nakamura, Hiroshi Nakano, Kiyoji Takagi, Kouji Iwaki
  • Patent number: 8304481
    Abstract: Process for preparing a thermoplastic resin composition containing an aromatic polycarbonate resin which may include a thermoplastic resin other than the aromatic polycarbonate resin, a granular talc, and optionally a rubber polymer, a flame retardant or a fluorinated polyolefin. The granular talc has a particle size in which a proportion of a 500 ?m-mesh screen residue thereof is not less than 55% by weight.
    Type: Grant
    Filed: September 15, 2010
    Date of Patent: November 6, 2012
    Assignee: Mitsubishi Engineering-Plastics Corporation
    Inventors: Makoto Nakamura, Hiroshi Nakano, Kiyoji Takagi, Kouji Iwaki
  • Patent number: 7985823
    Abstract: The invention aims at providing a process for the production of polycarbonate resin which is suppressed in discoloration and reduced in the content of crystalline foreign substance, gel, and so on.
    Type: Grant
    Filed: September 25, 2007
    Date of Patent: July 26, 2011
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Kazuyuki Takahashi, Kouji Iwaki, Ryuuji Uchimura
  • Publication number: 20110009538
    Abstract: The present invention relates to a thermoplastic resin composition comprising an aromatic polycarbonate resin (component A) [which may comprise an aromatic polycarbonate resin (component A1) and a thermoplastic resin other than the aromatic polycarbonate resin (component A2)], a granular talc (component B) having a bulk density of 0.4 to 1.5 g/mL which is obtained by granulating a talc having an average particle size of 0.1 to 10 ?m, a rubber polymer (component C; optional component), a flame retardant (component E; optional component) and a fluorinated polyolefin (component F; optional component), wherein the granular talc (component B) has a particle size in which a proportion of a 500 ?m-mesh screen residue thereof is not less than 55% by weight; as well as a resin molded product obtained by molding the thermoplastic resin composition.
    Type: Application
    Filed: September 15, 2010
    Publication date: January 13, 2011
    Applicant: MITSUBISHI ENGINEERING-PLASTICS CORPORATION
    Inventors: Makoto Nakamura, Hiroshi Nakano, Kiyoji Takagi, Kouji Iwaki
  • Publication number: 20100036087
    Abstract: The invention aims at providing a process for the production of polycarbonate resin which is suppressed in discoloration and reduced in the content of crystalline foreign substance, gel, and so on.
    Type: Application
    Filed: September 25, 2007
    Publication date: February 11, 2010
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Kazuyuki Takahashi, Kouji Iwaki, Ryuuji Uchimura
  • Publication number: 20090215934
    Abstract: The present invention relates to a thermoplastic resin composition comprising an aromatic polycarbonate resin (component A) [which may comprise an aromatic polycarbonate resin (component A1) and a thermoplastic resin other than the aromatic polycarbonate resin (component A2)], a granular talc (component B) having a bulk density of 0.4 to 1.5 g/mL which is obtained by granulating a talc having an average particle size of 0.1 to 10 ?m, a rubber polymer (component C; optional component), a flame retardant (component E; optional component) and a fluorinated polyolefin (component F; optional component), wherein the granular talc (component B) has a particle size in which a proportion of a 500 ?m-mesh screen residue thereof is not less than 55% by weight; as well as a resin molded product obtained by molding the thermoplastic resin composition.
    Type: Application
    Filed: February 28, 2007
    Publication date: August 27, 2009
    Inventors: Makoto Nakamura, Hiroshi Nakano, Kiyoji Takagi, Kouji Iwaki
  • Patent number: 7008991
    Abstract: The present invention relates to a thermoplastic resin composition comprising two different thermoplastic resins (component A and component B), conductive carbon black (component C), and conductive carbon black having a larger specific surface area than that of component C or hollow carbon fibril (component D), said thermoplastic resin composition having an island-and-sea micro structure constituted by component A and component B, component C existing mostly in the island phase, and component D existing mostly in the sea phase.
    Type: Grant
    Filed: July 17, 2002
    Date of Patent: March 7, 2006
    Assignee: Mitsubishi Engineering-Plastics Corporation
    Inventors: Kiyoji Takagi, Makoto Nakamura, Kouji Iwaki
  • Publication number: 20030130405
    Abstract: The present invention relates to a thermoplastic resin composition comprising two different thermoplastic resins (component A and component B), conductive carbon black (component C), and conductive carbon black having a larger specific surface area than that of component C or hollow carbon fibril (component D),
    Type: Application
    Filed: July 17, 2002
    Publication date: July 10, 2003
    Applicant: Mitsubishi Engineering-Plastics Corporation
    Inventors: Kiyoji Takagi, Makoto Nakamura, Kouji Iwaki