TREA

Toshiyuki Watanabe

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Noise barrier wall
    • Patent number 6,019,189
    • Issue date Feb 1, 2000
    • Bridgestone Corporation
    • Hiroshi Shima
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Noise control apparatus
    • Patent number 6,006,858
    • Issue date Dec 28, 1999
    • Bridgestone Corporation
    • Hiroshi Shima
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Noise barrier and method of installing same
    • Patent number 5,971,096
    • Issue date Oct 26, 1999
    • Nihon Doro Kodan
    • Koich Matsumoto
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Soundproof wall
    • Patent number 5,739,482
    • Issue date Apr 14, 1998
    • Bridgestone Corporation
    • Hiroshi Shima
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Soundproof wall
    • Patent number 5,678,364
    • Issue date Oct 21, 1997
    • Bridgestone Corporation
    • Hiroshi Shima
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES