Patents by Inventor Nobukatsu Oomichi

Nobukatsu Oomichi 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).

  • Zirconia sintered body, process for production thereof, and application thereof
    Patent number: 6087285
    Abstract: A novel zirconia sintered body is provided which contains Y.sub.2 O.sub.3 in a solid solution state, and has tetragonal crystal grains oriented at an orientation degree of not higher than 45%. A process for producing the zirconia sintered body is also provided. This zirconium sintered body deteriorates less, and excellent in stability of surface smoothness, and can be produced by a simple process.
    Type: Grant
    Filed: October 8, 1998
    Date of Patent: July 11, 2000
    Assignee: Tosoh Corporation
    Inventors: Nobukatsu Oomichi, Koji Matsui, Akemi Kato, Michiharu Oogai