Patents by Inventor Susumo Yamamoto

Susumo Yamamoto 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).

  • Stainless steel wire and producing method thereof
    Patent number: 6132888
    Abstract: A stainless steel wire is plated with nickel (Ni) to a thickness of from not less than 1 .mu.m to not more than 5 .mu.m. An inorganic salt coat film mainly composed of at least one of potassium sulfate and borax (borate) and free from fluorine (F) or chlorine (Cl) is then deposited on the nickel (Ni) plate 2 as the substrate. The steel wire is then drawn to a reduction of area of not less than 60% to adjust the surface roughness thereof to a range of from 0.80 to 12.5 .mu.mRz, preferably from 1.0 to 10.0 .mu.mRz.
    Type: Grant
    Filed: July 16, 1999
    Date of Patent: October 17, 2000
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventor: Susumo Yamamoto