TREA

Keiko Matsushita

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Mask structure for lithography
    • Patent number 5,112,707
    • Issue date May 12, 1992
    • Canon Kabushiki Kaisha
    • Hideo Kato
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Mask structure for lithography
    • Patent number 4,956,249
    • Issue date Sep 11, 1990
    • Canon Kabushiki Kaisha
    • Hideo Kato
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY