TREA

Tatsuya Hongu

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Vibration isolator
    • Patent number 4,689,357
    • Issue date Aug 25, 1987
    • Nisshin Spinning Co., Ltd.
    • Tatsuya Hongu
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Resilient coat for tie of direct-connection type track
    • Patent number 4,652,495
    • Issue date Mar 24, 1987
    • Japanese National Railways
    • Yoshihiko Sato
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Microcellular polyurethane vibration isolator
    • Patent number 4,302,552
    • Issue date Nov 24, 1981
    • Nisshin Spinning Co., Ltd.
    • Tatsuya Hongu
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...