Patents by Inventor Tsuyoshi Kawano

Tsuyoshi Kawano 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).

  • Cold rolled steel sheet having excellent workability and method thereof
    Patent number: 3988173
    Abstract: A cold rolled steel sheet having excellent cold workability comprising not more than 0.10% of carbon, not more than 0.10% of silicon, not more than 0.50% of manganese, not more than 0.0080% of nitrogen, 0.003-0.080% of acid-soluble aluminum, 0.0020-0.0050% of boron, the balance being iron and unavoidable impurities.
    Type: Grant
    Filed: July 11, 1975
    Date of Patent: October 26, 1976
    Assignee: Nippon Steel Corporation
    Inventor: Tsuyoshi Kawano
  • Hot rolled steel sheet having excellent workability and method thereof
    Patent number: 3988174
    Abstract: A hot rolled steel sheet having excellent cold workability comprising not more than 0.10% of carbon, not more than 0.10% of silicon, not more than 0.50% of manganese, not more than 0.0080% of nitrogen, 0.003-not more than 0.080% of acid-soluble aluminum, 0.0020 - 0.0050% of boron, the balance being iron and unavoidable impurities.
    Type: Grant
    Filed: July 11, 1975
    Date of Patent: October 26, 1976
    Assignee: Nippon Steel Corporation
    Inventor: Tsuyoshi Kawano