Patents by Inventor Masahito Koiwa

Masahito Koiwa 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).

  • Intramedullary nail
    Patent number: 6197029
    Abstract: An intramedullary nail in which a plurality of fins (26) which protrude radially are formed on the outer circumference of the nail, providing firm internal fixation which makes the nail easy to operate.
    Type: Grant
    Filed: December 1, 1998
    Date of Patent: March 6, 2001
    Inventors: Juhro Fujimori, Shinichi Yoshino, Masahito Koiwa