Patents by Inventor Yuichiro Nishijima

Yuichiro Nishijima 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).

  • Artificial intervertebral disk
    Patent number: 5899941
    Abstract: An operation for fixing a vertebral column by an autogenetic or a spacer has no movability or motion property, leading to an impedance of everyday life functions and recurrence of damage at the treated part.
    Type: Grant
    Filed: December 9, 1997
    Date of Patent: May 4, 1999
    Assignee: Chubu Bearing Kabushiki Kaisha
    Inventors: Yuichiro Nishijima, Koichi Tanaka