TREA

Tsutomu Shinagawa

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  • Niigata-ken, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Photomask blank, photomask and method of manufacture
    • Patent number 6,733,930
    • Issue date May 11, 2004
    • Shin-Etsu Chemical Co., Ltd.
    • Tsutomu Shinagawa
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Photomask blank and photomask
    • Patent number 6,727,027
    • Issue date Apr 27, 2004
    • Shin-Etsu Chemical Co., Ltd.
    • Tetsushi Tsukamoto
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents