Patents by Inventor Yasuhiro Sakamoto

Yasuhiro Sakamoto 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).

  • Exposure apparatus
    Patent number: 5028955
    Abstract: An exposure apparatus of this invention is used in an exposure process of semiconductor and LCD devices.
    Type: Grant
    Filed: February 14, 1990
    Date of Patent: July 2, 1991
    Assignees: Tokyo Electron Limited, Tokyo Electron Kyushu Limited
    Inventors: Yasushi Hayashida, Noriyuki Anai, Osamu Hirakawa, Masami Akimoto, Yasuhiro Sakamoto, Keisuke Shigaki, Masashi Moriyama
  • Cathode ray tube with color selecting grill
    Patent number: 4504764
    Abstract: A cathode ray tube having a phosphor layer formed on an inner surface of a panel of an envelope, a color selecting aperture grill formed of a number of grid elements and located within the envelope opposing to the phosphor layer, a metal wire for coupling the number of the grid elements, an electron gun located within the envelope and a deflecting device located around the envelope is disclosed, in which the resonance frequency of at least one grid element of the color selecting grid is selected different from that of another grid element in the vicinity thereof.
    Type: Grant
    Filed: May 7, 1982
    Date of Patent: March 12, 1985
    Assignee: Sony Corporation
    Inventors: Yasuhiro Sakamoto, Koji Saita, Akihiro Kojima