TREA

Tatsuo Okamoto

Follow

Person

  • Itami, JP
People

Patents Grantslast 30 patents

  • Information Patent Grant

    Process for manufacturing a photomask
    • Patent number 4,985,319
    • Issue date Jan 15, 1991
    • Mitsubishi Denki Kabushiki Kaisha
    • Yaichiro Watakabe
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Process for manufacturing a photomask
    • Patent number 4,876,164
    • Issue date Oct 24, 1989
    • Mitsubishi Denki Kabushiki Kaisha
    • Yaichiro Watakabe
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Photomask material
    • Patent number 4,873,163
    • Issue date Oct 10, 1989
    • Mitsubishi Denki Kabushiki Kaisha
    • Yaichiro Watakabe
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY