Patents by Inventor Yoshikazu Uemura

Yoshikazu Uemura 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).

  • X-ray image intensifier and method of manufacturing the same
    Patent number: 4906893
    Abstract: An output phosphor film used in an output screen of an image intensifier is made of ZnS or (Zn, Cd)S host material and at least one activator element selected from the group consisting of Cu, Ag, Au, Al, and Cl. The phosphor film is formed on a face plate by means of chemical vapor-deposition, or physical vapor deposition in an inert-gas atmosphere having a pressure of 1 Pa or more, and is heat-treated. The formed phosphor film has hexagonal (Wurtzite-type) crystal and/or cubic (sphalerite-type) crystal structure. These crystals are orientated such that the (002) planes of the hexagonal crystals and/or the (111) planes of the cubic crystals are substantially parallel to the face plate.
    Type: Grant
    Filed: December 20, 1988
    Date of Patent: March 6, 1990
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Katsuhisa Homma, Sakae Kimura, Masaru Nikaido, Yoshiaki Ouchi, Yoshiharu Obata, Yoshikazu Uemura, Syozo Sato