Patents by Inventor Iwao Yasuda

Iwao Yasuda 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).

  • Electret method of promoting callus formation in regeneration of bones
    Patent number: 3968790
    Abstract: Disclosed is an electret for use in regeneration of bones which is essentially made of polytetrafluoroethylene (Teflon), polyhexafluoropropylene (FEP Teflon), polyester (Mylar), polypropylene and other substances having high molecular weight, or carnauba wax, bees wax, rosin and other waxy or resinous substances having lower molecular weight. The electret according to this invention when applied to broken bones will expedite the callus formation on bones.
    Type: Grant
    Filed: February 26, 1975
    Date of Patent: July 13, 1976
    Assignee: Rikagaku Kenkyusho
    Inventors: Eiichi Fukada, Toshiaki Takamatsu, Iwao Yasuda
  • Ashtray
    Patent number: D287296
    Type: Grant
    Filed: November 1, 1984
    Date of Patent: December 16, 1986
    Inventor: Iwao Yasuda