Patents by Inventor Kazunari Shirota

Kazunari Shirota 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).

  • Injection device for dental anesthetic or like
    Patent number: 5368572
    Abstract: An injection device for a dental anesthetic or the like is constituted such that the linkage between the rear end side of an operating rod provided so as to freely go in and out of a main body and a drive mechanism operated by a motor provided in the main body is made detachably and the connecting or disconnecting operation of the drive mechanism and the rear end side of the operating rod is carried out by means of a manipulation portion provided in the main body.
    Type: Grant
    Filed: August 31, 1993
    Date of Patent: November 29, 1994
    Assignee: Shirota Denki Rozai Kabushiki Kaisha
    Inventor: Kazunari Shirota
  • Dental detection apparatus for position of root apex
    Patent number: 5112224
    Abstract: A dental detection apparatus for the position of a root apex comprises two oscillators for generating the currents having two different frequencies passing between a single electrode contacting to a patient's body and a reamer, a differential amplifier for detecting the difference .DELTA.
    Type: Grant
    Filed: March 12, 1991
    Date of Patent: May 12, 1992
    Assignee: Shirota Denki Rozai Kabushiki Kaisha
    Inventor: Kazunari Shirota
  • Reinforcement wire for material for the impression of decayed tooth
    Patent number: 4348182
    Abstract: A stainless steel wire bonded with a number of short filaments or staple fibers which are electrostatically bonded to the wire, said filaments being engaged in a jerry material which is applied over a decayed tooth for taking an impression thereof, when the wire is embeded into said jerry material for the reinforcement thereof.
    Type: Grant
    Filed: December 31, 1980
    Date of Patent: September 7, 1982
    Assignee: Shirota Denki Kozai Kabushiki-Kaisha
    Inventor: Kazunari Shirota