Patents by Inventor Yoshiaki Kanai

Yoshiaki Kanai 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).

  • Non-magnetic high hardness austenitic stainless steel
    Patent number: 4851059
    Abstract: A non-magnetic cold-deformed stainless steel usable for electronic equipment parts has a Vickers hardness number after cold forming of not less than 400 and a magnetic permeability of not more than 1.01. The steel has excellent hot workability and is mainly used for components such as shafts and pins of VTRs and VTR cassette tapes.
    Type: Grant
    Filed: March 7, 1988
    Date of Patent: July 25, 1989
    Assignees: Nippon Steel Corp., TNK Sanwa Precision Co., Ltd.
    Inventors: Hidehiko Sumitomo, Takanori Nakazawa, Jun Nakatsuka, Jiro Tominaga, Yoshiaki Kanai