Patents by Inventor Tomoki Nikaido

Tomoki Nikaido 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).

  • Polycrystalline cubic boron nitride abrasive
    Patent number: 5443605
    Abstract: A polycrystalline cubic boron nitride abrasive is provided wherein a mean size of each primary crystal grain forming the abrasive is not more than 1.0 .mu.m and a standard deviation thereof is not more than 0.5.
    Type: Grant
    Filed: June 1, 1994
    Date of Patent: August 22, 1995
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Masaharu Suzuki, Tomoki Nikaido, Takeshi Mabuchi