Patents Assigned to Takeo Oki
  • Coated abrasive grains and a manufacturing method therefor
    Patent number: 5230718
    Abstract: Coated abrasive grains and a manufacturing method for them are disclosed. The abrasive grains are coated using an immersion method with a coating comprising at least one substance selected from carbides, borides, and nitrides of a metal, comprising: preparing an immersion bath comprising a molten salt bath containing said metal; and immersing abrasive grains to be treated in said immersion bath for a suitable length of time.
    Type: Grant
    Filed: March 23, 1992
    Date of Patent: July 27, 1993
    Assignees: Takeo Oki, Noritake Co., Ltd.
    Inventors: Takeo Oki, Yoichi Fukuta, Eiichi Hisada, Satoshi Aoki
  • Coated abrasive grains and a manufacturing method therefor
    Patent number: 5090969
    Abstract: Coated abrasive grains and a manufacturing method for them are disclosed. The abrasive grains are coated using an immersion method with a coating comprising at least one substance selected from carbides, borides, and nitrides of a metal, comprising:preparing an immersion bath comprising a molten salt bath containing said metal; andimmersing abrasive grains to be treated in said immersion bath for a suitable length of time.
    Type: Grant
    Filed: October 23, 1989
    Date of Patent: February 25, 1992
    Assignees: Takeo Oki, Noritake Co., Ltd.
    Inventors: Takeo Oki, Yoichi Fukuta, Eiichi Hisada, Satoshi Aoki