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Masato Asahina

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Patents Grantslast 30 patents

  • Information Patent Grant

    Light-emitting device
    • Patent number 9,220,142
    • Issue date Dec 22, 2015
    • Citizen Electronics Co., Ltd.
    • Takakazu Yano
    • H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    One-piece speaker assembly
    • Patent number 6,876,743
    • Issue date Apr 5, 2005
    • Citizen Electronics Co., Ltd.
    • Masato Asahina
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Compound speaker for a portable communication device
    • Patent number 6,711,274
    • Issue date Mar 23, 2004
    • Citizen Electronics Co., Ltd.
    • Masato Asahina
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Telephone receiver with a speaker
    • Patent number D487455
    • Issue date Mar 9, 2004
    • Citizen Electronics Co., Ltd.
    • Masato Asahina
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Telephone receiver with a speaker
    • Patent number D487083
    • Issue date Feb 24, 2004
    • Citizen Electronics Co., Ltd.
    • Masato Asahina
    • D14 - Recording, communication, or information retrieval equipment
  • Information Patent Grant

    Electromagnetic sound generator
    • Patent number 6,433,674
    • Issue date Aug 13, 2002
    • Citizen Electronics Co., Ltd.
    • Atsushi Kuwabara
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Surface-mounted electromagnetic sound generator
    • Patent number 6,233,346
    • Issue date May 15, 2001
    • Citizen Electronics Co., Ltd.
    • Masato Asahina
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Electromagnetic sound generator
    • Patent number 6,023,518
    • Issue date Feb 8, 2000
    • Citizen Electronics Co., Ltd.
    • Atsushi Kuwabara
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

  • Information Patent Application

    LIGHT-EMITTING DEVICE
    • Publication number 20130088159
    • Publication date Apr 11, 2013
    • CITIZEN HOLDINGS CO., LTD.
    • Takakazu YANO
    • H01 - BASIC ELECTRIC ELEMENTS
  • Information Patent Application

    Compound speaker for a portable communication device
    • Publication number 20030059079
    • Publication date Mar 27, 2003
    • CITIZEN ELECTRONICS CO., LTD.
    • Masato Asahina
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    One-piece speaker assembly
    • Publication number 20020170772
    • Publication date Nov 21, 2002
    • Masato Asahina
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Electromagnetic sound generator
    • Publication number 20010028303
    • Publication date Oct 11, 2001
    • CITIZEN ELECTRONICS CO., LTD.
    • Atsushi Kuwabara
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE