Patents by Inventor Tetsuo Kosuda

Tetsuo Kosuda 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).

  • Block guage and method of marking ceramic material
    Patent number: 5272120
    Abstract: A method of making a ceramic material by radiating a laser beam onto the portion of said ceramic material to be marked in a low oxygen atmosphere and a block gauge marked by this marking method. This marking method enables a ceramic material to have a distinct mark. A block gauge composed of a ceramic material has excellent properties such as corrosion resistance.
    Type: Grant
    Filed: July 1, 1992
    Date of Patent: December 21, 1993
    Assignee: Mitutoyo Corporation
    Inventors: Tetsuo Kosuda, Yoshirou Kamata, Kinji Takizawa