Patents by Inventor Seiichiro Sekiwa

Seiichiro Sekiwa 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).

  • Method for cooling a metal strip during the process of heat treatment
    Patent number: 4288258
    Abstract: During the process in which a metal strip is moved in a floating condition, the metal strip is first heated, and thereafter cooled and annealed. In cooling the metal strip, the metal strip is cooled so that both edges widthwise thereof are lowered in temperature more quickly than the temperature of a central portion widthwise thereof. The metal strip is cooled in a manner as described whereby a great thermal stress is not introduced in the metal strip and consequently, the metal strip is cooled without being wrinkled.
    Type: Grant
    Filed: August 3, 1979
    Date of Patent: September 8, 1981
    Assignee: Daidotokushuko
    Inventors: Seiichiro Sekiwa, Kenji Kawate, Hidenobu Jinnouchi