Patents by Inventor Tadami Kinugawa

Tadami Kinugawa 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).

  • Transfer material carrying member and image forming apparatus making use of the same
    Patent number: 5534581
    Abstract: A transfer material carrying member has a copolymer and conductive particles; the copolymer has a component unit represented by the Formula (I) and a component unit represented by the Formula (II), and the component unit represented by Formula (II) is in an amount of from 0.1% by weight to 50% by weight based on the total weight of the copolymer.
    Type: Grant
    Filed: February 27, 1995
    Date of Patent: July 9, 1996
    Assignee: Canon Kabushiki Kaisha
    Inventors: Noriko Ohtani, Naoto Fujimura, Kiyoshi Sakai, Teigo Sakakibara, Masahiro Inoue, Nobuhiko Takekoshi, Shinya Mayama, Hideo Ohtaki, Tadami Kinugawa, Toshiaki Takada, Yuichi Hashimoto
  • Conductive copolycarbonate-siloxane compositions
    Patent number: 5324454
    Abstract: A thermoplastic resin composition comprising (a) 100 parts by weight of thermoplastic copolycarbonate comprising 0.1 to 50% by weight of structural unit of the following general formula (1) and 99.9 to 50% by weight of structural unit of the following general formula (2): ##STR1## and (b) 0.1 to 30 parts by weight of electroconductive carbon black can produce a molding product having good mechanical properties and surface smoothness with good moldability and (c) a polyester or styrenic resin.
    Type: Grant
    Filed: September 29, 1993
    Date of Patent: June 28, 1994
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Toshiaki Takata, Tadami Kinugawa, Hideo Otaki
  • Thermoplastic resin composition
    Patent number: 5273685
    Abstract: A thermoplastic resin composition comprising (a) 100 parts by weight of thermoplastic copolycarbonate comprising 0.1 to 50% by weight of structural unit of the following general formula (1) and 99.9 to 50% by weight of structural unit of the following general formula (2): ##STR1## and (b) 0.1 to 30 parts by weight of electroconductive carbon black can produce a molding product having good mechanical properties and surface smoothness with good moldability.
    Type: Grant
    Filed: February 21, 1992
    Date of Patent: December 28, 1993
    Assignee: Mitsubishi Gas Chemical Co., Inc.
    Inventors: Toshiaki Takata, Tadami Kinugawa, Hideo Otaki
  • Polycarbonate resin composition
    Patent number: 5015670
    Abstract: A glass-reinforced polycarbonate resin composition comprising an aromatic polycarbonate resin (a) and, blended therewith, 5 to 60% by weight based on the weight of the composition of a glass reinforcement (b) which has been treated with an acid.The composition has excellent dimensional stability, mechanical strength, heat resistance and electrical characteristics, and is therefore used in industrial fields of cameras, VTR's, facsimiles and the like.
    Type: Grant
    Filed: October 18, 1990
    Date of Patent: May 14, 1991
    Assignee: Mitsubishi Gas Chemical Company Ltd.
    Inventors: Toshiaki Takada, Tadami Kinugawa, Katsuhiro Yamaguchi, Kou Tanabe, Hiroyuki Nakano
  • Copolycarbonate resin from branched chain alkylene bis phenol
    Patent number: 4695620
    Abstract: A polycarbonate resin having an improved flexibility, flowability and heat resistance, and a process for producing such polycarbonate resins are disclosed. The polycarbonate resin of this invention is particularly useful as optical articles and other precision molding materials and is produced by a solution polymerization method using a bisphenol compound and a substituted alkylenebisphenol compound.
    Type: Grant
    Filed: April 17, 1986
    Date of Patent: September 22, 1987
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Mituhiko Masumoto, Shigeo Yanada, Tadami Kinugawa