TREA

HAI-PING MA

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  • LINCOLN, RI, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Ultra-high vacuum metallic seal
    • Patent number 9,151,387
    • Issue date Oct 6, 2015
    • Parker-Hannifin Corporation
    • Amitava Datta
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Metallic sealing ring
    • Patent number 6,042,121
    • Issue date Mar 28, 2000
    • EG&G Sealol, Inc.
    • Hai-Ping Ma
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Pressure balanced compliant seal device
    • Patent number 5,370,402
    • Issue date Dec 6, 1994
    • EG&G Sealol, Inc.
    • James F. Gardner
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    ULTRA-HIGH VACUUM METALLIC SEAL
    • Publication number 20150369366
    • Publication date Dec 24, 2015
    • Parker-Hannifin Corporation
    • Amitava Datta
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    ULTRA-HIGH VACUUM METALLIC SEAL
    • Publication number 20090179389
    • Publication date Jul 16, 2009
    • Amitava Datta
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    PERIPHERALLY PIVOTED OSCILLATING VANE MACHINE
    • Publication number 20090081061
    • Publication date Mar 26, 2009
    • STEPHEN M. CHOMYSZAK
    • F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES