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Akihiko Ohtaka

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Patents Grantslast 30 patents

  • Information Patent Grant

    Silencer
    • Patent number 6,070,695
    • Issue date Jun 6, 2000
    • Kabushiki Kaisha Yutaka Giken
    • Akihiko Ohtaka
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Silencer
    • Patent number 5,670,756
    • Issue date Sep 23, 1997
    • Honda Giken Kogyo Kabushiki Kaisha
    • Akihiko Ohtaka
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS