TREA

Kousaburou Matsumura

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  • Yokohama, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Positive resist patterns
    • Patent number 4,983,495
    • Issue date Jan 8, 1991
    • Tosoh Corporation
    • Yoshitaka Tsutsumi
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    A method of image-wise exposing and developing halogen-containing p...
    • Patent number 4,822,721
    • Issue date Apr 18, 1989
    • Toyo Soda Manufacturing Co., Ltd.
    • Yoshitaka Tsutsumi
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Halogen-containing polyacrylate derivatives
    • Patent number 4,752,635
    • Issue date Jun 21, 1988
    • Toyo Soda Manufacturing Co., Ltd.
    • Yoshitaka Tsutsumi
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...