Patents by Inventor Naoya Kudo

Naoya Kudo 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).

  • Liquid metal ion source and method for producing the same
    Patent number: 6531811
    Abstract: A liquid metal ion source comprises a reservoir storing a metal to be ionized and a needle electrode to which the metal is fed from the reservoir wherein the size of small pits formed in at least a cone surface of the needle electrode is 0.1 &mgr;m-1.5 &mgr;m and the small pits exist in the cone surface of the needle electrode in a density of 5×104 number/mm2-5×106 number/mm2 the small pits being formed by chemically etching.
    Type: Grant
    Filed: January 28, 2000
    Date of Patent: March 11, 2003
    Assignee: Denki Kagaku Kogyo Kabushiki Kaisha
    Inventors: Naoya Kudo, Katsuyoshi Tsunoda, Yoshinori Terui