Patents by Inventor Hirose Yusuke

Hirose Yusuke 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).

  • Patent number: 4908279
    Abstract: Conventional electroplated steel sheets of Zn alloys of Zn-Ni base, Zn-Fe base, etc., having a poor phosphating performance, have been involved in the problems such that when used for automobile bodies, craterings may be generated on coating films at the time of electrodeposition coating to damage the coating appearance, or that only poor corrosion resistance and pin holing resistance can be achieved at the portions where no coating film is applied or only a thin coating film is applied for structural reasons of automobile bodies.To solve such problems, this invention provides a multilayer zinc metal electroplated steel sheet comprising (i) a lower layer electroplated coating provided on the surface of the steel sheet and comprising a Zn-Ni base alloy having Ni content of 10 to 16 wt. % or Zn-Fe base alloy having Fe content of 10 to 30 wt. %, containing 0.005 to 5 wt.
    Type: Grant
    Filed: December 31, 1987
    Date of Patent: March 13, 1990
    Assignee: Nisshin Steel Co., Ltd.
    Inventors: Hirose Yusuke, Uchida Yukio, Kato Yoshio, Hisada Kazuyuki, Watanabe Koichi, Sakai Nobuhiko, Miyoshi Yasushi