Patents by Inventor Takao Oguro

Takao Oguro 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).

  • Grinding method and grinding machine
    Patent number: 5390446
    Abstract: A grinding method and a grinding machine of reduced grinding resistance, in which letting f [mm] denote the diamond particle size of a diamond grindstone, V [m/min] denote the peripheral speed of the diamond grindstone, and f [m/min] denote the feed speed of a workpiece made of Aluminum nitride ceramic, the peripheral speed of the diamond grindstone and the feed speed of the workpiece are set so as to satisfy V.gtoreq.35 .phi.+2000 and V/f.gtoreq.70 .phi.+800.
    Type: Grant
    Filed: June 18, 1992
    Date of Patent: February 21, 1995
    Assignees: Hitachi, Ltd., Hitachi Seiko, Ltd.
    Inventors: Shinichi Kazui, Hiroyuki Ogino, Kenji Morita, Kuninori Imai, Hideaki Sasaki, Takao Oguro