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Mikio Iwasa

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  • Katano, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Speaker device
    • Patent number 8,428,293
    • Issue date Apr 23, 2013
    • Panasonic Corporation
    • Akiko Fujise
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Loudspeaker
    • Patent number 7,447,328
    • Issue date Nov 4, 2008
    • Matsushita Electric Industrial Co., Ltd.
    • Hiroyuki Takewa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Surrounding structure of a loudspeaker
    • Patent number 7,054,459
    • Issue date May 30, 2006
    • Matsushita Electric Industrial Co., Ltd.
    • Mitsukazu Kuze
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Speaker
    • Patent number 6,973,194
    • Issue date Dec 6, 2005
    • Matsushita Electric Industrial Co., Ltd.
    • Mikio Iwasa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Loud speaker, diaphragm and process for making the diaphragm
    • Patent number 6,757,404
    • Issue date Jun 29, 2004
    • Matsushita Electric Industrial Co., Ltd.
    • Hiroyuki Takewa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Piezoelectric loudspeaker
    • Patent number 6,747,395
    • Issue date Jun 8, 2004
    • Matsushita Electric Industrial Co., Ltd.
    • Kazue Satoh
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Speaker
    • Patent number 6,714,655
    • Issue date Mar 30, 2004
    • Matsushita Electric Industrial Co., Ltd.
    • Mikio Iwasa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Loudspeaker damper and loudspeaker
    • Patent number 6,655,495
    • Issue date Dec 2, 2003
    • Matsushita Electric Industrial Co., Ltd.
    • Mitsukazu Kuze
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Speaker
    • Patent number 6,305,491
    • Issue date Oct 23, 2001
    • Matsushita Electric Industrial Co., Ltd.
    • Mikio Iwasa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Loudspeaker
    • Patent number 6,069,965
    • Issue date May 30, 2000
    • Matsushita Electric Industrial Co., Ltd.
    • Hiroyuki Takewa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Speaker
    • Patent number 5,862,242
    • Issue date Jan 19, 1999
    • Matsushita Electric Industrial Co., Ltd.
    • Hiroyuki Takewa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Loudspeaker
    • Patent number 5,664,024
    • Issue date Sep 2, 1997
    • Matsushita Electric Industrial Co., Ltd.
    • Akihiro Furuta
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Directional loudspeaker system
    • Patent number 4,823,908
    • Issue date Apr 25, 1989
    • Matsushita Electric Industrial Co., Ltd.
    • Tsuneo Tanaka
    • G10 - MUSICAL INSTRUMENTS ACOUSTICS

Patents Applicationslast 30 patents

  • Information Patent Application

    SPEAKER DEVICE
    • Publication number 20100158282
    • Publication date Jun 24, 2010
    • Akiko Fujise
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Loudspeaker
    • Publication number 20050041830
    • Publication date Feb 24, 2005
    • Hiroyuki Takewa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Speaker
    • Publication number 20040146174
    • Publication date Jul 29, 2004
    • Mikio Iwasa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Surrounding structure of a loudspeaker
    • Publication number 20030231784
    • Publication date Dec 18, 2003
    • Mitsukazu Kuze
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Loudspeaker damper and loudspeaker
    • Publication number 20030079936
    • Publication date May 1, 2003
    • Mitsukazu Kuze
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Speaker
    • Publication number 20020172392
    • Publication date Nov 21, 2002
    • Mikio Iwasa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    Loud speaker, diaphragm and process for making the diaphragm
    • Publication number 20020061117
    • Publication date May 23, 2002
    • Hiroyuki Takewa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Application

    SPEAKER
    • Publication number 20010011615
    • Publication date Aug 9, 2001
    • MIKIO IWASA
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE