TREA

Tomonori Katayama

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  • Yokohama, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Device for controlling a propagation direction of noise
    • Patent number 4,158,401
    • Issue date Jun 19, 1979
    • Bridgestone Tire Company Limited
    • Masayasu Matsumoto
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Noise control devices
    • Patent number 4,156,476
    • Issue date May 29, 1979
    • Bridgestone Tire Company Limited
    • Masayasu Matsumoto
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES