Patents Assigned to Fujimi Kenmazai Kogyo Kabushiki Kaisha
  • Polishing composition for memory hard disc
    Patent number: 4705566
    Abstract: A composition for polishing a layer of non-electrolysis nickel plating, an alumite layer or an aluminum substrate in a memory hard disc the composition comprising water, a polishing agent of aluminum oxide, and a polishing accelerator of one of nickel nitrate and aluminum nitrate, or two compounds, nickel nitrate and aluminum nitrate, or two compounds, nickel sulfate and aluminum nitrate.
    Type: Grant
    Filed: May 21, 1986
    Date of Patent: November 10, 1987
    Assignee: Fujimi Kenmazai Kogyo Kabushiki Kaisha
    Inventors: Tetsuji Senda, Takashi Baba
  • Polishing composition
    Patent number: 4696697
    Abstract: A composition for polishing a plastic product, a layer of non-electrolysis nickel plating, an alumite layer or an aluminum product comprises water, a polishing agent of aluminum oxide and a polishing accelerator of nickel sulfate, and is neutral or weak acid.
    Type: Grant
    Filed: February 7, 1986
    Date of Patent: September 29, 1987
    Assignee: Fujimi Kenmazai Kogyo Kabushiki Kaisha
    Inventors: Hirohito Kitano, Toshiki Oowaki, Takashi Baba
  • Active material compositions with porous protective sheath and method for preparing
    Patent number: 4059544
    Abstract: A particulate composition composed of a core of active material and a protective sheath having communicating micro pores to permit access of reactants to the active materials is described as well as a method for preparing same.
    Type: Grant
    Filed: January 8, 1976
    Date of Patent: November 22, 1977
    Assignees: Fujimi Kenmazai Kogyo Kabushiki Kaisha, Mitsubishi Petrochemical Co., Ltd.
    Inventors: Yoshinobu Yamaguchi, Nanahiko Kitano, Yoshihisa Watanabe, Makoto Imanari