Patents by Inventor Takebumi Narikawa

Takebumi Narikawa 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).

  • Charged particle beam storage and circulation apparatus
    Patent number: 4737726
    Abstract: An apparatus for accelerating and circulating a beam of charged particles includes a circular equilibrium orbit 3 for circulating the particles, a plurality of inflectors 2a-2g disposed in a spiral path sequence where the charged particles are introduced into the orbit, and negative and positive electrode pairs 18a, 18b disposed flanking the orbit to draw off and neutralize positive ions generated from residual gas in the vacuum chamber of the apparatus.
    Type: Grant
    Filed: July 21, 1986
    Date of Patent: April 12, 1988
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Koju Ueda, Manabu Mizota, Shiro Nakamura, Shintaro Fukumoto, Takebumi Narikawa