TREA

Takeshi Kaiwa

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Patents Grantslast 30 patents

  • Information Patent Grant

    Speaker and manufacturing method for the same
    • Patent number 7,433,486
    • Issue date Oct 7, 2008
    • Pioneer Corporation
    • Takeshi Kaiwa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Speaker apparatus
    • Patent number 6,804,366
    • Issue date Oct 12, 2004
    • Pioneer Corporation
    • Osamu Takahashi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Speaker and speaker system
    • Patent number 6,754,362
    • Issue date Jun 22, 2004
    • Pioneer Corporation
    • Takeshi Kaiwa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

  • Information Patent Application

    Speaker and manufacturing method for the same
    • Publication number 20040240702
    • Publication date Dec 2, 2004
    • PIONEER CORPORATION
    • Takeshi Kaiwa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Speaker and speaker system
    • Publication number 20020118855
    • Publication date Aug 29, 2002
    • PIONEER CORPORATION
    • Takeshi Kaiwa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Speaker apparatus
    • Publication number 20020067842
    • Publication date Jun 6, 2002
    • Osamu Takahashi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE