Patents by Inventor Eisuke Yoshii

Eisuke Yoshii 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).

  • Method and apparatus for root canal irrigation
    Patent number: 4247288
    Abstract: A root canal irrigation means for treating decayed teeth including a liquid vessel filled with water, antiseptic solution or some other kind of liquid, a pumping means for pumping the liquid from the liquid vessel under pressure, and a discharge needle shaped like an injection needle coupled to the outlet of the pumping means and which feeds the liquid under pressure to a dental focus when the pumping means is operated. The pumping means comprises a reciprocating pump which is coupled to the outlet of the liquid vessel.
    Type: Grant
    Filed: June 29, 1979
    Date of Patent: January 27, 1981
    Assignee: Ricoh Watch Co., Ltd.
    Inventors: Eisuke Yoshii, Hiroshi Kawase