Patents by Inventor Katsutada Yamada

Katsutada Yamada 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).

  • Scratch and corrosion resistant, formable nickel plated steel sheet, and manufacturing method
    Patent number: 4908280
    Abstract: An anti-scratch nickel plated steel sheet and strip is provided which comprises, applying a nickel plating to both sides of the sheet or strip, subsequently plating a nickel phosphorus alloy on at least one or the other side of said plated layer, then subjecting said plated article to a heat treatment under conditions sufficient to form a nickel ferrous alloy layer and to obtain a hardening effect of said nickel phosphorus alloy plated layer.
    Type: Grant
    Filed: July 10, 1989
    Date of Patent: March 13, 1990
    Assignee: Toyo Kohan Co., Ltd.
    Inventors: Hitoshi Omura, Katsutada Yamada, Hideo Omura