Patents by Inventor Seijiro Kato

Seijiro Kato 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).

  • Method of manufacturing electron-emitting device, electron source and image-forming apparatus
    Patent number: 5622634
    Abstract: An electron-emitting device comprising a pair of device electrodes and an electroconductive film including an electron-emitting region is manufactured by a method comprising a process of forming an electroconductive film including steps of forming a pattern on a thin film containing a metal element on the basis of a difference of chemical state, and removing part of the thin film on the basis of the difference of chemical state.
    Type: Grant
    Filed: December 19, 1994
    Date of Patent: April 22, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takashi Noma, Seijiro Kato, Fumio Kishi, Hisaaki Kawade, Toshikazu Ohnishi, Michiyo Nishimura, Kumiko Uno, Takahiro Horiguchi, Masato Yamanobe
  • Optical recording medium
    Patent number: 5158859
    Abstract: An optical recording medium for performing writing and reading on a pit by use of a light of beam comprises an optical recording layer comprising a porous layer.
    Type: Grant
    Filed: April 10, 1991
    Date of Patent: October 27, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroyuki Imatake, Mizuho Hiraoka, Yoshihiro Ogawa, Hitoshi Yoshino, Sachiko Ichikawa, Seijiro Kato
  • Optical recording medium
    Patent number: 5026623
    Abstract: An optical recording medium for performing writing and reading on a pit by use of a light of beam comprises an optical recording layer comprising a porous layer.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: June 25, 1991
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hiroyuki Imataki, Mizuho Hiraoka, Yoshihiro Ogawa, Hitoshi Yoshino, Sachiko Ichikawa, Seijiro Kato