Patents by Inventor Takao Yogo

Takao Yogo 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: 5095665
    Abstract: Vitrified super abrasive grain grinding tool comprised of abrasive grains and first and second fillers bonded together by a vitrified bonding material, wherein the abrasive grains are super abrasive grains, the softening points of the first and second fillers are both higher than an inherent firing temperature of the vitrified bonding material for the super abrasive grains, the first filler is a ceramics which maintains a hollow state before and after firing of the bonding material, and the second filler is a ceramics which exists in a non-hollow state. This grinding tool has a high porosity at a low concentration while utilizing excellent grinding characteristic of super abrasive grains with high grain retention force and little burn mark in dry grinding.
    Type: Grant
    Filed: June 16, 1989
    Date of Patent: March 17, 1992
    Assignee: Noritake Co., Limited
    Inventors: Akira Nagata, Takao Yogo