Patents by Inventor Tsutomu Nihei

Tsutomu Nihei 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).

  • Dispenser for dental viscous material
    Patent number: 6296484
    Abstract: A dispenser for dental viscous material including a box-shaped handle provided with a cartridge-mounting portion for mounting a cartridge containing a dental viscous material. A guide shaft is supported in the front and back direction in a cavity of the box-shaped handle, at a preset position of which is provided a lever-engaging portion. A lever is provided in the box-shaped handle via a lever shaft, one end of which is engaged with the lever-engaging portion of the guide shaft and the other end of which is positioned outside the box-shaped handle. An elastic member is engaged with the box-shaped handle and the guide shaft or the lever so as to return the guide shaft to an initial position.
    Type: Grant
    Filed: April 17, 2000
    Date of Patent: October 2, 2001
    Assignee: GC Corporation
    Inventors: Tsutomu Nihei, Kazuya Ishida