TREA

Yasuo Fukuyama

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  • Uji, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method for making magnetic rolls
    • Patent number 4,640,808
    • Issue date Feb 3, 1987
    • Yamauchi Rubber Industry Co., Ltd.
    • Kunio Okumura
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Magnetic rolls for electrostatic recording devices
    • Patent number 4,517,719
    • Issue date May 21, 1985
    • Yamauchi Rubber Industry Co., Ltd.
    • Kunio Okumura
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY