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Takefumi Hatanaka

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  • Midori-cho, Koganei-shi, Tokyo, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Turbine
    • Patent number 6,425,737
    • Issue date Jul 30, 2002
    • Takefumi Hatanaka
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Turbine and gas turbine
    • Patent number 6,308,513
    • Issue date Oct 30, 2001
    • Takefumi Hatanaka
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Vehicle driving method and hybrid vehicle propulsion system
    • Patent number 6,202,782
    • Issue date Mar 20, 2001
    • Takefumi Hatanaka
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Steam-augmented gas turbine
    • Patent number 6,089,024
    • Issue date Jul 18, 2000
    • Elson Corporation
    • Takefumi Hatanaka
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    Closed cycle gas turbine engine and mechanical system driven thereby
    • Patent number 5,694,773
    • Issue date Dec 9, 1997
    • Takefumi Hatanaka
    • F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • Information Patent Grant

    High-efficiency power supply control apparatus for variable-speed i...
    • Patent number 5,500,581
    • Issue date Mar 19, 1996
    • Arex Electronics Corporation
    • Takefumi Hatanaka
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Induction motor control apparatus providing high efficiency with ra...
    • Patent number 5,442,271
    • Issue date Aug 15, 1995
    • Arex Electronics Corporation
    • Takefumi Hatanaka
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Method and apparatus for controlling the supply of power to an indu...
    • Patent number 5,241,256
    • Issue date Aug 31, 1993
    • Arex Electronics Corporation
    • Takefumi Hatanaka
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Induction motor control apparatus
    • Patent number 5,204,606
    • Issue date Apr 20, 1993
    • Arex Electronics Corp.
    • Naruto Kuwahara
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Cutter disc for a paper shredder
    • Patent number D319064
    • Issue date Aug 13, 1991
    • Arex Electronics Corp.
    • Takefumi Hatanaka
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Cutter disc for a paper shredder
    • Patent number D319065
    • Issue date Aug 13, 1991
    • Arex Electronics Corp.
    • Takefumi Hatanaka
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Saturable reactor apparatus for automatic control of power factor o...
    • Patent number 4,914,375
    • Issue date Apr 3, 1990
    • Arex Electronics Corporation
    • Takefumi Hatanaka
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Waste material shredder
    • Patent number 4,844,366
    • Issue date Jul 4, 1989
    • Takefumi Hatanaka
    • B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
  • Information Patent Grant

    Waste material shredder
    • Patent number 4,776,525
    • Issue date Oct 11, 1988
    • Takefumi Hatanaka
    • B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
  • Information Patent Grant

    Cutter disk for paper shredding machine
    • Patent number D297240
    • Issue date Aug 16, 1988
    • Takefumi Hatanaka
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Paper shredder cutter disc
    • Patent number D292590
    • Issue date Nov 3, 1987
    • Takefumi Hatanaka
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Waste material shredder
    • Patent number 4,690,340
    • Issue date Sep 1, 1987
    • Takefumi Hatanaka
    • B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
  • Information Patent Grant

    Paper shredder or the like
    • Patent number D265909
    • Issue date Aug 24, 1982
    • Lifewell Corporation
    • Takefumi Hatanaka
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Paper shredder or the like
    • Patent number D265910
    • Issue date Aug 24, 1982
    • Lifewell Corporation
    • Takefumi Hatanaka
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Paper shredder or the like
    • Patent number D265911
    • Issue date Aug 24, 1982
    • Lifewell Corporation
    • Takefumi Hatanaka
    • D15 - Machines not elsewhere specified
  • Information Patent Grant

    Document shredder
    • Patent number 4,260,115
    • Issue date Apr 7, 1981
    • Lifewell Corporation
    • Takefumi Hatanaka
    • B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
  • Information Patent Grant

    Desk-top shredder
    • Patent number 4,257,565
    • Issue date Mar 24, 1981
    • Lifewell Corporation
    • Takefumi Hatanaka
    • B02 - CRUSHING, PULVERISING, OR DISINTEGRATING PREPARATORY TREATMENT OF GRAIN...
  • Information Patent Grant

    Automatic document shredder
    • Patent number 4,231,530
    • Issue date Nov 4, 1980
    • Takefumi Hatanaka
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Document shredder
    • Patent number 4,192,467
    • Issue date Mar 11, 1980
    • Takefumi Hatanaka
    • B30 - PRESSES
  • Information Patent Grant

    Document shredder
    • Patent number 4,124,169
    • Issue date Nov 7, 1978
    • Takefumi Hatanaka
    • B30 - PRESSES
  • Information Patent Grant

    Tool holder
    • Patent number 4,111,587
    • Issue date Sep 5, 1978
    • International Patent Transactions Company Limited
    • Takefumi Hatanaka
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents