Patents by Inventor Hideshi Fujisawa

Hideshi Fujisawa 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 the production of steel sheet coated with a fluororesin film
    Patent number: 5705017
    Abstract: A method of producing a steel sheet coated with a fluororesin film by heat-fusing the fluororesin film onto a surface of the steel sheet, comprising heating the surface of the steel sheet to a temperature higher by 30-120 degrees C. than a melting point of the fluororesin of the fluororesin film, and contact bonding the fluororesin film onto the steel sheet surface between a pair of rolls, while a surface of a roll facing the fluororesin film, in the pair of rolls, is heated to a temperature lower by 100-210 degrees C. than the melting point of the fluororesin of the fluororesin film.
    Type: Grant
    Filed: December 5, 1995
    Date of Patent: January 6, 1998
    Assignee: Kawatetsu Galvanizing Co., Ltd.
    Inventors: Yasuhei Sakamoto, Toshio Irie, Hideshi Fujisawa, Koji Seto, Morimasa Kuroda