Patents by Inventor Senkichi Tsujimura

Senkichi Tsujimura 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).

  • Tinned steel sheet having a high degree of corrosion resistance and a method of producing the same
    Patent number: 4731301
    Abstract: Coated steel sheet of high corrosion resistance comprises a sheet of steel containing not more than 0.1% by weight of carbon, 0.005 to 0.08% by weight of soluble aluminum and 0.2 to 20% by weight of chromium, the balance being iron and unavoidable impurities. The steel carries a nickel or nickel alloy layer formed on at least one surface thereof and having a thickness of 0.001 to 1.5 microns and a layer of tin formed on the nickel or nickel alloy layer and having a thickness of at least 0.05 micron. A method of producing it is also disclosed.
    Type: Grant
    Filed: December 20, 1985
    Date of Patent: March 15, 1988
    Assignee: Nippon Steel Corporation
    Inventors: Seijun Higuchi, Yashichi Oyagi, Tomonari Oga, Toshinori Mizuguchi, Senkichi Tsujimura, Toshinori Katayama, Fumio Yamamoto, Kenichi Asakawa