TREA

Kiyoshi Koyama

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  • Kamakura, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Waterproof lighting apparatus
    • Patent number 6,030,108
    • Issue date Feb 29, 2000
    • Bridgestone Corporation
    • Minoru Ishiharada
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Optical waveguide hose
    • Patent number 5,333,227
    • Issue date Jul 26, 1994
    • Bridgestone Corporation
    • Minoru Ishiharada
    • G02 - OPTICS