Patents by Inventor Hisao Kawase

Hisao Kawase 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).

  • Hot-dip aluminum coated steel strip having excellent strength and oxidation resistance at elevated temperatures and process for production thereof
    Patent number: 4571367
    Abstract: Commercial process for the production of hot-dip aluminum coated steel strip or sheet having improved strength and oxidation resistance at elevated temperatures wherein a Ti containing extremely low carbon Si-Mn steel is used as a steel substrate for hot-dip coating and wherein in the hot rolling step in the manufacture of the steel substrate the temperature of the hot rolled material being coiled is controlled low enough to provide steel surfaces substantially free from internal oxidation at the end of the descaling step.
    Type: Grant
    Filed: February 26, 1985
    Date of Patent: February 18, 1986
    Assignee: Nisshin Steel Co., Ltd.
    Inventors: Toshiro Yamada, Noriyasu Sakai, Hisao Kawase
  • Aluminum coated steel sheet and process for producing the same
    Patent number: 4546051
    Abstract: An aluminum coated steel sheet having excellent formability and corrosion resistance comprising a steel substrate of a recrystallized structure, an Al--Si coating layer of a recrystallized structure on at least one surface of the substrate, and a discontinuous intermediate layer of Al--Fe--Si intermetallic compounds. The product may be conveniently produced by rolling an Al--Si hot dipped steel sheet and annealing the rolled sheet under suitably selected conditions.
    Type: Grant
    Filed: June 12, 1984
    Date of Patent: October 8, 1985
    Assignee: Nisshin Steel Co., Ltd.
    Inventors: Yukio Uchida, Kazuhiro Takagi, Kiichiro Katayama, Hisao Kawase