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Takafumi YUASA

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Patents Grantslast 30 patents

  • Information Patent Grant

    Speaker device
    • Patent number 10,491,984
    • Issue date Nov 26, 2019
    • PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    • Kazuki Honda
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Speaker device
    • Patent number 10,469,925
    • Issue date Nov 5, 2019
    • PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    • Suemei Fukuhara
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Signal processing method and speaker system
    • Patent number 9,820,047
    • Issue date Nov 14, 2017
    • PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    • Akihisa Kawamura
    • H03 - BASIC ELECTRONIC CIRCUITRY
  • Information Patent Grant

    Loudspeaker, electronic apparatus using same, and mobile apparatus
    • Patent number 9,813,820
    • Issue date Nov 7, 2017
    • PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    • Takafumi Yuasa
    • G02 - OPTICS
  • Information Patent Grant

    Speaker device
    • Patent number 9,774,935
    • Issue date Sep 26, 2017
    • PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    • Toshiyuki Matsumura
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Loudspeaker, electronic apparatus using loudspeaker, and mobile equ...
    • Patent number 9,628,916
    • Issue date Apr 18, 2017
    • PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    • Takafumi Yuasa
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Loudspeaker, electronic apparatus using loudspeaker, and mobile equ...
    • Patent number 9,596,545
    • Issue date Mar 14, 2017
    • PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    • Takafumi Yuasa
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Loudspeaker and equipment including the same
    • Patent number 9,131,304
    • Issue date Sep 8, 2015
    • PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    • Atsushi Sakaguchi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Speaker
    • Patent number 8,135,164
    • Issue date Mar 13, 2012
    • Panasonic Corporation
    • Shoji Tanaka
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Speaker suspension
    • Patent number D468729
    • Issue date Jan 14, 2003
    • Matsushita Electric Industrial Co., Ltd.
    • Satoshi Takayama
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Speaker system
    • Patent number 5,932,850
    • Issue date Aug 3, 1999
    • Matsushita Electric Industrial Co., Ltd.
    • Takashi Sabato
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Speaker system
    • Patent number 5,929,392
    • Issue date Jul 27, 1999
    • Matsushita Electric Industrial Co., Ltd.
    • Takashi Sabato
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Speaker system
    • Patent number 5,793,000
    • Issue date Aug 11, 1998
    • Matsushita Electric Industrial Co., Ltd.
    • Takashi Sabato
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

  • Information Patent Application

    SPEAKER DEVICE
    • Publication number 20190045285
    • Publication date Feb 7, 2019
    • Panasonic Intellectual Property Management Co., Ltd.
    • SUEMEI FUKUHARA
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    SPEAKER DEVICE
    • Publication number 20180249243
    • Publication date Aug 30, 2018
    • Panasonic Intellectual Property Management Co., Ltd.
    • KAZUKI HONDA
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    SPEAKER DEVICE
    • Publication number 20180242061
    • Publication date Aug 23, 2018
    • Panasonic Intellectual Property Management Co., Ltd.
    • KAZUKI HONDA
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    SIGNAL PROCESSING METHOD AND SPEAKER SYSTEM
    • Publication number 20170064448
    • Publication date Mar 2, 2017
    • Panasonic Intellectual Property Management Co., Ltd.
    • AKIHISA KAWAMURA
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    SPEAKER DEVICE
    • Publication number 20170064421
    • Publication date Mar 2, 2017
    • Panasonic Intellectual Property Management Co., Ltd.
    • TOSHIYUKI MATSUMURA
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    LOUDSPEAKER, ELECTRONIC APPARATUS USING SAME, AND MOBILE APPARATUS
    • Publication number 20160286318
    • Publication date Sep 29, 2016
    • Panasonic Intellectual Property Management Co., Ltd.
    • Takafumi YUASA
    • G02 - OPTICS
  • Information Patent Application

    LOUDSPEAKER, ELECTRONIC APPARATUS USING LOUDSPEAKER, AND MOBILE EQU...
    • Publication number 20160234601
    • Publication date Aug 11, 2016
    • Panasonic Intellectual Property Management Co., Ltd.
    • Takafumi YUASA
    • G02 - OPTICS
  • Information Patent Application

    LOUDSPEAKER AND EQUIPMENT INCLUDING THE SAME
    • Publication number 20140205135
    • Publication date Jul 24, 2014
    • Atsushi Sakaguchi
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    SPEAKER AND DEVICE USING THIS SPEAKER
    • Publication number 20090262972
    • Publication date Oct 22, 2009
    • Matsushita Electric Industrial Co., Ltd.
    • Takafumi Yuasa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    SPEAKER
    • Publication number 20080159583
    • Publication date Jul 3, 2008
    • Matsushita Electric Industrial Co., Ltd.
    • Shoji TANAKA
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE