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Fumio Jyoraku

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  • Hitachiohta, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Rotor of permanent magnet rotating electric machine
    • Patent number 7,880,358
    • Issue date Feb 1, 2011
    • Hitachi, Ltd.
    • Tsukasa Taniguchi
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Rotor of permanent magnet rotating electric machine
    • Patent number 7,768,171
    • Issue date Aug 3, 2010
    • Hitachi, Ltd.
    • Tsukasa Taniguchi
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Rotor of permanent magnet rotating electric machine
    • Patent number 7,417,348
    • Issue date Aug 26, 2008
    • Hitachi, Ltd.
    • Tsukasa Taniguchi
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Vacuum cleaner
    • Patent number 6,442,792
    • Issue date Sep 3, 2002
    • Hitachi, Ltd.
    • Takayuki Sudou
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Motor-driven blower and method of manufacturing impeller for motor-...
    • Patent number 6,146,094
    • Issue date Nov 14, 2000
    • Hitachi, Ltd.
    • Takeshi Obana
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • 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

    Method and apparatus for operating vacuum cleaner
    • Patent number 5,294,872
    • Issue date Mar 15, 1994
    • Hitachi, Ltd.
    • Haruo Koharagi
    • 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

    Method and apparatus for operating vacuum cleaner
    • Patent number RE34286
    • Issue date Jun 22, 1993
    • Hitachi, Ltd.
    • Hisanori Toyoshima
    • 015 - Brushing, scrubbing, and general cleaning
  • Information Patent Grant

    Motor control apparatus for an electric vacuum cleaner
    • Patent number 5,166,585
    • Issue date Nov 24, 1992
    • Hitachi, Ltd.
    • Haruo Koharagi
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Electric blower having improved return passage for discharged air flow
    • Patent number 5,110,266
    • Issue date May 5, 1992
    • Hitachi, Ltd.
    • Hisanori Toyoshima
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Method and apparatus for operating vacuum cleaner
    • Patent number 5,075,607
    • Issue date Dec 24, 1991
    • 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...
  • Information Patent Grant

    Method and apparatus for operating vacuum cleaner
    • Patent number 4,983,895
    • Issue date Jan 8, 1991
    • Hitachi, Ltd.
    • Haruo Koharagi
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Method and apparatus for operating vacuum cleaner
    • Patent number 4,958,406
    • Issue date Sep 25, 1990
    • Hitachi, Ltd.
    • Hisanori Toyoshima
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Vacuum cleaner
    • Patent number 4,955,105
    • Issue date Sep 11, 1990
    • Hitachi, Ltd.
    • Masao Sunagawa
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Method and apparatus for operating vacuum cleaner
    • Patent number 4,880,474
    • Issue date Nov 14, 1989
    • Hitachi, Ltd.
    • Haruo Koharagi
    • A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
  • Information Patent Grant

    Electric vacuum cleaner
    • Patent number D302878
    • Issue date Aug 15, 1989
    • Hitachi, Ltd.
    • Shigetaka Kimura
    • D32 - Washing, cleaning, or drying machine
  • Information Patent Grant

    Electric blower
    • Patent number 4,767,285
    • Issue date Aug 30, 1988
    • Hitachi, Ltd.
    • Fumio Jyoraku
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents