TREA

Satoshi Kumada

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  • Saitama-ken, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Audio system
    • Patent number 6,519,344
    • Issue date Feb 11, 2003
    • Pioneer Corporation
    • Kiyoshi Yajima
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Audio system
    • Patent number 6,477,255
    • Issue date Nov 5, 2002
    • Pioneer Electronic Corporation
    • Minoru Yoshida
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Speaker system for use in an automobile vehicle
    • Patent number 6,038,325
    • Issue date Mar 14, 2000
    • Pioneer Electronic Corporation
    • Minoru Yoshida
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Speaker system for use in an automobile vehicle
    • Patent number 5,854,847
    • Issue date Dec 29, 1998
    • Pioneer Electronic Corp.
    • Minoru Yoshida
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE
  • Information Patent Grant

    Surroundless loudspeaker
    • Patent number 5,848,173
    • Issue date Dec 8, 1998
    • Pioneer Electronic Corporation
    • Yoko Sato
    • H04 - ELECTRIC COMMUNICATION TECHNIQUE