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Mitsuhisa Kawamata

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  • Hitachi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Vacuum cleaner
    • Patent number 5,381,584
    • Issue date Jan 17, 1995
    • Hitachi, Ltd.
    • Fumio Jyoraku
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Vacuum cleaner with fuzzy logic control
    • Patent number 5,243,732
    • Issue date Sep 14, 1993
    • Hitachi, Ltd.
    • Haruo Koharagi
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Vacuum cleaner
    • Patent number 5,027,469
    • Issue date Jul 2, 1991
    • Hitachi, Ltd.
    • Hisanori Toyoshima
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...