TREA

Osamu Takahashi

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  • Yamagata-ken, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Oval speaker apparatus and method of manufacturing the same
    • Patent number 7,221,773
    • Issue date May 22, 2007
    • Pioneer Corporation
    • Osamu Takahashi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Speaker
    • Patent number 7,043,045
    • Issue date May 9, 2006
    • Pioneer Corporation
    • Osamu Takahashi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Speaker and speaker diaphragm
    • Patent number 6,957,714
    • Issue date Oct 25, 2005
    • Pioneer Corporation
    • Osamu Takahashi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Speaker apparatus
    • Patent number 6,944,310
    • Issue date Sep 13, 2005
    • Pioneer Corporation
    • Masanori Ito
    • 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
  • Information Patent Grant

    Dome speaker
    • Patent number 6,154,556
    • Issue date Nov 28, 2000
    • Pioneer Electronic Corporation
    • Osamu Takahashi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Speaker unit and a method for manufacturing the same
    • Patent number 5,892,185
    • Issue date Apr 6, 1999
    • Pioneer Electronic Corporation
    • Osamu Takahashi
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS

Patents Applicationslast 30 patents

  • Information Patent Application

    Oval speaker apparatus and method of manufacturing the same
    • Publication number 20050175205
    • Publication date Aug 11, 2005
    • PIONEER CORPORATION
    • Osamu Takahashi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Speaker and speaker diaphragm
    • Publication number 20040007420
    • Publication date Jan 15, 2004
    • PIONEER CORPORATION
    • Osamu Takahashi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Speaker
    • Publication number 20030202674
    • Publication date Oct 30, 2003
    • PIONEER CORPORATION
    • Osamu Takahashi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Speaker apparatus
    • Publication number 20030164262
    • Publication date Sep 4, 2003
    • PIONEER CORPORATION
    • Masanori Ito
    • 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