TREA

Hiroshi Tsubonuma

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  • Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Sound field control system
    • Patent number 5,604,809
    • Issue date Feb 18, 1997
    • Pioneer Electronic Corporation
    • Hiroshi Tsubonuma
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Sound field compensating apparatus
    • Patent number 5,201,005
    • Issue date Apr 6, 1993
    • Pioneer Electronic Corporation
    • Fumio Matsushita
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS