TREA

Takumi Kosugi

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  • Osaka, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Continuous sheet having optical functions
    • Patent number 5,885,490
    • Issue date Mar 23, 1999
    • Goyo Paper Working Co., Ltd.
    • Osamu Kawaguchi
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Prism sheet
    • Patent number 5,844,720
    • Issue date Dec 1, 1998
    • Goyo Paper Working Co., Ltd.
    • Shuzo Ohara
    • G02 - OPTICS

Patents Applicationslast 30 patents