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Hong-Sheng Fang

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  • Hsinchu City, TW
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Patents Grantslast 30 patents

  • Information Patent Grant

    Multi-stage vacuum pump
    • Patent number 7,278,839
    • Issue date Oct 9, 2007
    • Industrial Technology Research Institute
    • Ming-Hsin Liu
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Asymmetric double screw rotor assembly
    • Patent number 6,312,242
    • Issue date Nov 6, 2001
    • Industrial Technology Research Institute
    • Hong-Sheng Fang
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Double screw rotor assembly with electrically controlled clearance...
    • Patent number 6,257,839
    • Issue date Jul 10, 2001
    • Industrial Technology Research Institute
    • Hong-Sheng Fang
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
  • Information Patent Grant

    Double screw rotor assembly having means to automatically adjust th...
    • Patent number 6,257,854
    • Issue date Jul 10, 2001
    • Industrial Technology Research Institute
    • Hong-Sheng Fang
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
  • Information Patent Grant

    Double screw rotor assembly
    • Patent number 6,176,694
    • Issue date Jan 23, 2001
    • Industrial Technology Research Institute
    • Hong-Sheng Fang
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...

Patents Applicationslast 30 patents

  • Information Patent Application

    Multi-stage vacuum pump
    • Publication number 20050089424
    • Publication date Apr 28, 2005
    • Ming-Hsin Liu
    • F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...