Patents by Inventor Reiichi Yamaga

Reiichi Yamaga 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).

  • Sealer for filling a dental root canal
    Patent number: 4931096
    Abstract: A sealer for filling a dental root canal which can seal the apex of the root and the root canal perfectly and can be removed with the gutta percha points when refilling is necessary.The sealer of the invention consists of the same basic material as the gutta percha point, so it adheres to the point initimately and firmly and can seal the apex of the root perfectly. The softening temperature of the sealer is about 40.degree.-45.degree. C., so the points and the sealer can be removed same time by heating at low temperature with a heat carrier when refilling is necessary.
    Type: Grant
    Filed: September 20, 1988
    Date of Patent: June 5, 1990
    Assignee: Toyo Chemical Laboratories, Inc.
    Inventors: Mutsuo Fujisawa, Tsutomu Kameda, Hirofumi Katsura, Reiichi Yamaga, Setsuko Ishido
  • Pharmaceutical compositions for dental use
    Patent number: 4146606
    Abstract: A pharmaceutical composition for dental use which comprises a strontium compound, a zinc compound, tannin and, optionally, a fluorine compound in such a weight proportion that strontium, zinc, tannin and fluorine is 1 to 3:2 to 4:1 to 3:0 to 4.
    Type: Grant
    Filed: May 26, 1978
    Date of Patent: March 27, 1979
    Assignees: Reiichi Yamaga, Ichiro Yokomizo
    Inventors: Reiichi Yamaga, Ichiro Yokomizo, Setsuo Higashi