Patents by Inventor Heiji Yoshinaka

Heiji Yoshinaka 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).

  • Surgical instrument
    Patent number: 5807394
    Abstract: To ensure continuous incising or coagulating technique without adhesion of carbonized body tissue proteins and fats which may be produced by thermal action of an arc discharge or Joule heat attendant on the electrotomy or electrocoagulation, at least a part of a surgical instrument, such as an electric knife or a forceps, is formed of a C/C composite material.
    Type: Grant
    Filed: January 26, 1996
    Date of Patent: September 15, 1998
    Assignee: Mizuho Ika Kogyo Kabushiki Kaisha
    Inventors: Junya Sakai, Heiji Yoshinaka, Masaru Ohyama, Kenji Sumiya, Takashi Nemoto