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Makoto Yamagishi

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Patents Grantslast 30 patents

  • Information Patent Grant

    Ear speaker device
    • Patent number 8,913,772
    • Issue date Dec 16, 2014
    • Sony Corporation
    • Yukimasa Yamaguchi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Earphone
    • Patent number 8,885,865
    • Issue date Nov 11, 2014
    • Makoto Yamagishi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Twin driver earphone
    • Patent number 8,660,288
    • Issue date Feb 25, 2014
    • Ocharaku Co. Ltd.
    • Makoto Yamagishi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Ear speaker device
    • Patent number 8,538,059
    • Issue date Sep 17, 2013
    • Sony Corporation
    • Makoto Yamagishi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Speaker apparatus
    • Patent number 8,254,613
    • Issue date Aug 28, 2012
    • Sony Corporation
    • Makoto Yamagishi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Electroacoustic transducer and ear speaker device
    • Patent number 8,213,632
    • Issue date Jul 3, 2012
    • Sony Corporation
    • Makoto Yamagishi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Ear speaker device
    • Patent number 8,175,316
    • Issue date May 8, 2012
    • Sony Corporation
    • Makoto Yamagishi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Loudspeaker apparatus
    • Patent number 7,184,562
    • Issue date Feb 27, 2007
    • Sony Corporation
    • Hideki Seki
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Electro-acoustic transducer
    • Patent number 6,356,643
    • Issue date Mar 12, 2002
    • Sony Corporation
    • Makoto Yamagishi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Electro-acoustic transducer and housing
    • Patent number 6,307,943
    • Issue date Oct 23, 2001
    • Sony Corporation
    • Makoto Yamagishi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Acoustic transducer
    • Patent number 6,175,637
    • Issue date Jan 16, 2001
    • Sony Corporation
    • Masao Fujihira
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Speaker apparatus
    • Patent number 6,057,659
    • Issue date May 2, 2000
    • Sony Corporation
    • Akihiro Akiyama
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Acoustic transducer
    • Patent number 6,035,052
    • Issue date Mar 7, 2000
    • Sony Corporation
    • Masao Fujihira
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Speaker apparatus
    • Patent number 5,835,612
    • Issue date Nov 10, 1998
    • Sony Corporation
    • Masao Fujihira
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Stereo loudspeaker system with tweeters mounted on rotatable enlong...
    • Patent number 5,802,194
    • Issue date Sep 1, 1998
    • Sony Corporation
    • Makoto Yamagishi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Acoustic transducer and acoustic transducing system
    • Patent number 5,459,290
    • Issue date Oct 17, 1995
    • Sony Corporation
    • Makoto Yamagishi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Transducer having two ducts
    • Patent number 5,115,473
    • Issue date May 19, 1992
    • Sony Corporation
    • Makoto Yamagishi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Electroacoustic transducer apparatus
    • Patent number 5,048,092
    • Issue date Sep 10, 1991
    • Sony Corporation
    • Makoto Yamagishi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Electro-acoustic transducer
    • Patent number 4,981,194
    • Issue date Jan 1, 1991
    • Sony Corporation
    • Yoshiyuki Kamon
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Ear piece transducer
    • Patent number 4,965,838
    • Issue date Oct 23, 1990
    • Sony Corporation
    • Yoshiyuki Kamon
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Open-air type earphone
    • Patent number 4,742,887
    • Issue date May 10, 1988
    • Sony Corporation
    • Makoto Yamagishi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Earphone
    • Patent number 4,646,872
    • Issue date Mar 3, 1987
    • Sony Corporation
    • Yoshiyuki Kamon
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

  • Information Patent Application

    Ear Speaker Device
    • Publication number 20140254855
    • Publication date Sep 11, 2014
    • SONY CORPORATION
    • Yukimasa YAMAGUCHI
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    TWIN DRIVER EARPHONE
    • Publication number 20130266170
    • Publication date Oct 10, 2013
    • OCHARAKU CO. LTD.
    • Makoto Yamagishi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    EARPHONE
    • Publication number 20120195440
    • Publication date Aug 2, 2012
    • Makoto Yamagishi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    EAR SPEAKER DEVICE
    • Publication number 20120177206
    • Publication date Jul 12, 2012
    • Makoto Yamagishi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Electroacoustic Transducer and Ear Speaker Device
    • Publication number 20090154755
    • Publication date Jun 18, 2009
    • SONY CORPORATION
    • Makoto Yamagishi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Ear Speaker Device
    • Publication number 20090052716
    • Publication date Feb 26, 2009
    • Yukimasa YAMAGUCHI
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Ear speaker device
    • Publication number 20080253604
    • Publication date Oct 16, 2008
    • Makoto Yamagishi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Acoustic system, acoustic apparatus, and optimum sound field genera...
    • Publication number 20080118078
    • Publication date May 22, 2008
    • SONY CORPORATION
    • Kohei Asada
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Speaker apparatus
    • Publication number 20070189566
    • Publication date Aug 16, 2007
    • Makoto Yamagishi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Speaker device
    • Publication number 20040190746
    • Publication date Sep 30, 2004
    • Hideki Seki
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    ELECTRO-ACOUSTIC TRANSDUCER
    • Publication number 20010012372
    • Publication date Aug 9, 2001
    • MAKOTO YAMAGISHI
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE