Patents by Inventor Keisuke SHIMAYA

Keisuke SHIMAYA 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).

  • SURFACE TREATED STEEL STRIP AND MANUFACTURING METHOD OF SURFACE TREATED STEEL STRIP
    Publication number: 20190211456
    Abstract: A surface treated steel strip according to the present invention includes: a base steel sheet; a zinc phosphate coating film layer made of needle zinc phosphate crystals which are formed in an island shape on a surface of the base steel sheet; and a lubricating coating film layer covering the surface of the base steel sheet and a part of the zinc phosphate coating film layer, and containing at least a lubricating component, in which an area ratio of the zinc phosphate crystals exposed from a surface of the lubricating coating film layer is 25% to 90%.
    Type: Application
    Filed: April 13, 2017
    Publication date: July 11, 2019
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Atsushi YASUI, Kazuhiro SATO, Norihisa NISHITANI, Yoshihiro KAWANISHI, Keisuke SHIMAYA, Tomoya TESHIGAWARA, Takeshi FUJIWAKI, Hiroki TAGUCHI