TREA

Keizo Okamoto

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  • Higashikurume, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Tire tread rubber composition
    • Patent number 4,678,830
    • Issue date Jul 7, 1987
    • Bridgestone Corporation
    • Susumu Sato
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Bead filler rubber composition
    • Patent number 4,421,891
    • Issue date Dec 20, 1983
    • Bridgestone Tire Company Limited
    • Itsuo Miyake
    • B60 - VEHICLES IN GENERAL