Patents by Inventor Hiromi Yoshino

Hiromi Yoshino 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 of manufacturing a valve plate for compressor
    Patent number: 6912783
    Abstract: In a manufacturing method of a valve plate for a compressor according to this invention, a punch die 43 formed with a convex and concave configuration at its tip end face 42 is set at a press machine 41, and the punch die 43 is depressed against a surface of a valve plate 9 to transfer the convex and concave configuration of the tip end face 42. Thus, peripheral portions of a suction port and a discharge port of the valve plate 9 are roughened.
    Type: Grant
    Filed: February 19, 2002
    Date of Patent: July 5, 2005
    Assignee: Kabushiki Kaisha Toyota Jidoshokki
    Inventors: Hirohiko Tanaka, Suguru Hirota, Atsushi Shibata, Takeshi Kondo, Mitsuru Hattori, Eiji Tokunaga, Tetsuhiko Fukanuma, Masakazu Hashimoto, Hiromi Yoshino
  • Method of manufacturing a valve plate for compressor
    Publication number: 20030163919
    Abstract: In a manufacturing method of a valve plate for a compressor according to this invention, a punch die 43 formed with a convex and concave configuration at its tip end face 42 is set at a press machine 41, and the punch die 43 is depressed against a surface of a valve plate 9 to transfer the convex and concave configuration of the tip end face 42. Thus, peripheral portions of a suction port and a discharge port of the valve plate 9 are roughened.
    Type: Application
    Filed: March 18, 2003
    Publication date: September 4, 2003
    Inventors: Hirohiko Tanaka, Suguru Hirota, Atsushi Shibata, Takeshi Kondo, Mitsuru Hattori, Eiji Tokunaga, Tetsuhiko Fukanuma, Masakazu Hashimoto, Hiromi Yoshino