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Koji Maekawa

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  • Yamagata, JP
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Patents Grantslast 30 patents

Patents Applicationslast 30 patents

  • Information Patent Application

    VIBRATING BODY FOR SPEAKER AND SPEAKER DEVICE
    • Publication number 20110232990
    • Publication date Sep 29, 2011
    • Pioneer Corporation
    • Hiroyuki Kobayashi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    SPEAKER DEVICE
    • Publication number 20110200204
    • Publication date Aug 18, 2011
    • Pioneer Corporation
    • Minoru Horigome
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    SPEAKER DEVICE
    • Publication number 20110051988
    • Publication date Mar 3, 2011
    • Pioneer Corporation
    • Yasuaki Ogasawara
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    SPEAKER AND MAGNETIC CIRCUIT
    • Publication number 20090161905
    • Publication date Jun 25, 2009
    • Sinsuke Konuma
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Speaker device
    • Publication number 20070286447
    • Publication date Dec 13, 2007
    • Pioneer Corporation
    • Hiroyuki Tomiyama
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    IMAGE PROCESSING APPARATUS AND CONTROL METHOD THEREOF
    • Publication number 20070127043
    • Publication date Jun 7, 2007
    • Koji Maekawa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Vehicle-mounted speaker device and vehicle having the same
    • Publication number 20060291687
    • Publication date Dec 28, 2006
    • PIONEER CORPORATION
    • Koji Maekawa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Speaker system for vehicle
    • Publication number 20060067539
    • Publication date Mar 30, 2006
    • PIONEER CORPORATION
    • Koji Maekawa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Damper for speaker device, speaker device using the damper and manu...
    • Publication number 20050254682
    • Publication date Nov 17, 2005
    • Pioneer Corporation
    • Koji Maekawa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Speaker unit for seat
    • Publication number 20050117766
    • Publication date Jun 2, 2005
    • Pioneer Corporation
    • Takeshi Ito
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Speaker apparatus
    • Publication number 20050111690
    • Publication date May 26, 2005
    • PIONEER CORPORATION
    • Tetsuya Onuma
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Door speaker apparatus and door panel
    • Publication number 20050013459
    • Publication date Jan 20, 2005
    • PIONEER CORPORATION
    • Koji Maekawa
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Speaker apparatus to be mounted on a vehicle
    • Publication number 20040264710
    • Publication date Dec 30, 2004
    • PIONEER CORPORATION
    • Koji Maekawa
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Inner panel and loudspeaker apparatus
    • Publication number 20040120541
    • Publication date Jun 24, 2004
    • PIONEER CORPORATION
    • Koji Maekawa
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Listening device for hands-free system
    • Publication number 20040101154
    • Publication date May 27, 2004
    • PIONEER CORPORATION
    • Koji Maekawa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Electric cord and loudspeaker using the electric cord
    • Publication number 20040099436
    • Publication date May 27, 2004
    • PIONEER CORPORATION
    • Koji Maekawa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Speaker-provided mounting table
    • Publication number 20040025755
    • Publication date Feb 12, 2004
    • Koji Maekawa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Speaker device
    • Publication number 20040028246
    • Publication date Feb 12, 2004
    • Koji Maekawa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Chair equipped with a speaker
    • Publication number 20030152245
    • Publication date Aug 14, 2003
    • PIONEER CORPORATION
    • Koji Maekawa
    • B60 - VEHICLES IN GENERAL
  • Information Patent Application

    Speaker diaphragm and method of manufacturing same
    • Publication number 20020140136
    • Publication date Oct 3, 2002
    • PIONEER CORPORATION
    • Toshihiro Ishigaki
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Electromechanical and electroacoustic transducer
    • Publication number 20020114487
    • Publication date Aug 22, 2002
    • Koji Maekawa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE