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Mitsuhiro Hasegawa

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  • Kadoma, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Speaker
    • Patent number 6,842,529
    • Issue date Jan 11, 2005
    • Matsushita Electric Industrial Co., Ltd.
    • Satoshi Koura
    • 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

    Electro-dynamic speaker
    • Patent number 4,353,432
    • Issue date Oct 12, 1982
    • Matsushita Electric Industrial Co., Ltd.
    • Mitsuhiro Hasegawa
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Headphone with two resonant peaks for simulating loudspeaker reprod...
    • Patent number 4,211,898
    • Issue date Jul 8, 1980
    • Matsushita Electric Industrial Co., Ltd.
    • Nobuhisa Atoji
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

  • Information Patent Application

    Speaker
    • Publication number 20030053651
    • Publication date Mar 20, 2003
    • Satoshi Koura
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE