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Seiji Tsuru

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Patents Grantslast 30 patents

  • Information Patent Grant

    Heat exchanger for air compressor
    • Patent number 7,172,015
    • Issue date Feb 6, 2007
    • Hitachi Plant Technologies, Ltd.
    • Haruo Miura
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    Compressor remote monitoring system
    • Patent number 7,136,781
    • Issue date Nov 14, 2006
    • Hitachi Plant Technologies, Ltd.
    • Takashi Saito
    • G05 - CONTROLLING REGULATING
  • Information Patent Grant

    Screw compressor
    • Patent number 6,679,689
    • Issue date Jan 20, 2004
    • Hitachi, Ltd.
    • Kazuki Takahashi
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Screw compressor system and operating method thereof
    • Patent number 6,599,094
    • Issue date Jul 29, 2003
    • Hitachi, Ltd.
    • Kazuya Kanazaki
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Screw compressor
    • Patent number 6,572,350
    • Issue date Jun 3, 2003
    • Hitachi, Ltd.
    • Kazuki Takahashi
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Air compressor and method of operating the same
    • Patent number 6,517,325
    • Issue date Feb 11, 2003
    • Hitachi, Ltd.
    • Seiji Tsuru
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Package-type screw compressor
    • Patent number 5,613,843
    • Issue date Mar 25, 1997
    • Hitachi, Ltd.
    • Seiji Tsuru
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Package-type screw compressor having coated rotors
    • Patent number 5,401,149
    • Issue date Mar 28, 1995
    • Hitachi, Ltd.
    • Seiji Tsuru
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Two-stage vacuum pump apparatus and method of operating the same
    • Patent number 4,770,609
    • Issue date Sep 13, 1988
    • Hitachi, Ltd.
    • Riichi Uchida
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Operation control system of rotary displacement type vacuum pump
    • Patent number 4,664,601
    • Issue date May 12, 1987
    • Hitachi, Ltd.
    • Riichi Uchida
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents

  • Information Patent Application

    Heat exchanger for air compressor
    • Publication number 20050082044
    • Publication date Apr 21, 2005
    • Haruo Miura
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Application

    Compressor remote monitoring system
    • Publication number 20030055534
    • Publication date Mar 20, 2003
    • Takashi Saito
    • G05 - CONTROLLING REGULATING
  • Information Patent Application

    Screw compressor
    • Publication number 20020081213
    • Publication date Jun 27, 2002
    • Hitachi, Ltd.
    • Kazuki Takahashi
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Screw compressor system and operating method thereof
    • Publication number 20020071769
    • Publication date Jun 13, 2002
    • Kazuya Kanazaki
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Heat exchanger for air compressor
    • Publication number 20020050345
    • Publication date May 2, 2002
    • Haruo Miura
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Application

    Screw compressor
    • Publication number 20020001531
    • Publication date Jan 3, 2002
    • Hitachi, Ltd.
    • Kazuki Takahashi
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Air compressor and method of operating the same
    • Publication number 20020001523
    • Publication date Jan 3, 2002
    • Seiji Tsuru
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...