TREA

Takeo Takagi

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  • Tsukuba, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Three-phase AC motor drive device, rail vehicle equipped with same,...
    • Patent number 11,701,971
    • Issue date Jul 18, 2023
    • Hitachi, Ltd.
    • Takeshi Shinomiya
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Chemical analysis apparatus
    • Patent number 6,599,477
    • Issue date Jul 29, 2003
    • Hitachi, Ltd.
    • Ryo Miyake
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Method and system for recycling discarded industrial products
    • Patent number 6,305,548
    • Issue date Oct 23, 2001
    • Hitachi, Ltd.
    • Eiji Sato
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Purification apparatus
    • Patent number 6,139,745
    • Issue date Oct 31, 2000
    • Hitachi, Ltd.
    • Takashi Mizumori
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Mixed flow compressor
    • Patent number 5,228,832
    • Issue date Jul 20, 1993
    • Hitachi, Ltd.
    • Hideo Nishida
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Centrifugal compressor
    • Patent number 5,178,516
    • Issue date Jan 12, 1993
    • Hitachi, Ltd.
    • Koji Nakagawa
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Turbo compressor
    • Patent number 5,062,766
    • Issue date Nov 5, 1991
    • Hitachi, Ltd.
    • Haruo Miura
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Diffuser for centrifugal compressor
    • Patent number 4,877,370
    • Issue date Oct 31, 1989
    • Hitachi, Ltd.
    • Koji Nakagawa
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents