Patents by Inventor Kenji Tsukuda

Kenji Tsukuda 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).

  • Skid rail
    Patent number: 4900248
    Abstract: Disclosed is an improved skid rail used in furnaces, particularly, the furnaces for heating steel pieces for hot processing. The skid rail uses, as the material of the skid members thereof, an oxide-dispersion reinforced type super alloy which comprises certain amounts of Cr, Fe, Al and Ti, and optionally a certain amount of Co, the balance being Ni, and contains fine particles of a high melting point metal oxide such a Y.sub.2 O.sub.3, ZrO.sub.2 and Al.sub.2 O.sub.3 dispersed in the austenitic matrix of the alloy.
    Type: Grant
    Filed: January 24, 1989
    Date of Patent: February 13, 1990
    Assignees: Daido Tokushuko Kabushiki Kaisha, Inco Alloys International, Inc.
    Inventors: Kazuto Terai, Susumu Isobe, Kenji Tsukuda, Hisao Inoue, Hiroshi Kobayashi