TREA

Hiroshi Takenaka

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  • Shimizu, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Air conditioner
    • Patent number 6,244,057
    • Issue date Jun 12, 2001
    • Hitachi, Ltd.
    • Yasutaka Yoshida
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    Air conditioner
    • Patent number 5,956,962
    • Issue date Sep 28, 1999
    • Hitachi, Ltd.
    • Hiroshi Takenaka
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    Air conditioner
    • Patent number 5,689,965
    • Issue date Nov 25, 1997
    • Hitachi, Ltd.
    • Hiroshi Takenaka
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    Active noise control apparatus for three-dimensional space
    • Patent number 5,343,713
    • Issue date Sep 6, 1994
    • Hitachi, Ltd.
    • Shinya Okabe
    • F24 - HEATING RANGES VENTILATING