TREA

Kazuaki Tamura

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  • Osaka, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Loudspeaker
    • Patent number 6,661,903
    • Issue date Dec 9, 2003
    • Matsushita Electric Industrial Co., Ltd.
    • Kazuaki Tamura
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Double cone-type loudspeaker
    • Patent number 5,933,512
    • Issue date Aug 3, 1999
    • Matsushita Electric Industrial Co., Ltd.
    • Kazuaki Tamura
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Bass speaker
    • Patent number 5,850,460
    • Issue date Dec 15, 1998
    • Matsushita Electric Industrial Co., Ltd.
    • Shoji Tanaka
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE