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Kiyoshi Yanagisawa

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  • Machida-shi, JP
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Patents Grantslast 30 patents

  • Information Patent Grant

    Vacuum pump with pump rotor pairs and permanent magnet motor
    • Patent number 6,902,380
    • Issue date Jun 7, 2005
    • Ebara Corporation
    • Yoshinori Ojima
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Grant

    Screw-type dry vacuum pump having an enlarged casing portion
    • Patent number 6,655,938
    • Issue date Dec 2, 2003
    • Ebara Corporation
    • Kiyoshi Yanagisawa
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Two stage screw type vacuum pump with motor in-between the stages
    • Patent number 5,846,062
    • Issue date Dec 8, 1998
    • Ebara Corporation
    • Kiyoshi Yanagisawa
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Screw rotor and method of generating tooth profile therefor
    • Patent number 5,800,151
    • Issue date Sep 1, 1998
    • Ebara Corporation
    • Takeshi Kawamura
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Screw rotor and method of generating tooth profile therefor
    • Patent number 5,697,772
    • Issue date Dec 16, 1997
    • Ebara Corporation
    • Takeshi Kawamura
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Bearing lubricating apparatus for rotary machine
    • Patent number 5,558,180
    • Issue date Sep 24, 1996
    • Ebara Corporation
    • Kiyoshi Yanagisawa
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Multi-stage screw vacuum pump
    • Patent number 5,378,128
    • Issue date Jan 3, 1995
    • Ebara Corporation
    • Kiyoshi Yanagisawa
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Screw vacuum pump
    • Patent number 5,374,170
    • Issue date Dec 20, 1994
    • Ebara Corporation
    • Noburu Shimizu
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Screw vacuum pump with a reduced starting load
    • Patent number 5,314,320
    • Issue date May 24, 1994
    • Ebara Corporation
    • Noburu Shimizu
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Screw vacuum pump
    • Patent number 5,261,802
    • Issue date Nov 16, 1993
    • Ebara Corporation
    • Kiyoshi Yanagisawa
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Screw compressor
    • Patent number 5,051,077
    • Issue date Sep 24, 1991
    • Ebara Corporation
    • Kiyoshi Yanagisawa
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Muffler
    • Patent number 5,004,068
    • Issue date Apr 2, 1991
    • Ebara Corporation
    • Toshitsugu Sase
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES

Patents Applicationslast 30 patents

  • Information Patent Application

    Vacuum pump and method of starting the same
    • Publication number 20060198735
    • Publication date Sep 7, 2006
    • Naoki Iijima
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Application

    Vacuum pump
    • Publication number 20020197171
    • Publication date Dec 26, 2002
    • Yoshinori Ojima
    • H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • Information Patent Application

    Screw-type dry vacuum pump
    • Publication number 20020057964
    • Publication date May 16, 2002
    • EBARA CORPORATION
    • Kiyoshi Yanagisawa
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...