Patents by Inventor Eiji Yabe

Eiji Yabe 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).

  • Double-chamber ion source
    Patent number: 4841197
    Abstract: Ion source including an electric discharge chamber body divided by a partition, having an anode electrode therein, into a main discharge chamber and a subsidiary discharge chamber. The subsidiary discharge chamber has a filament mounted therein aligned with at least one small opening through the partition wall and the anode electrode. An inert gas opening is provided into the subsidiary discharge chamber. An electric discharge gas opening and an ion outlet opening are provided to the main discharge chamber. Magnets are provided outside of the chamber body for creating a magnetic field extending nearly along an axis of the at least one small opening in the anode electrode.
    Type: Grant
    Filed: May 27, 1987
    Date of Patent: June 20, 1989
    Assignee: Nihon Shinku Gijutsu Kabushiki Kaisha
    Inventors: Kazuo Takayama, Eiji Yabe, Kenichi Takagi, Ryota Fukui, Riichi Kikuchi