TREA

David Llewellyn Mallis

Follow

Person

  • The Woodlands, TX, US
People

Patents Grantslast 30 patents

Patents Applicationslast 30 patents

  • Information Patent Application

    STEP-TO-STEP WEDGE THREAD CONNECTIONS AND RELATED METHODS
    • Publication number 20130219686
    • Publication date Aug 29, 2013
    • Hydril Company
    • David Llewellyn Mallis
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    STEP-TO-STEP WEDGE THREAD CONNECTIONS AND RELATED METHODS
    • Publication number 20120074693
    • Publication date Mar 29, 2012
    • Hydril Company
    • David Llewellyn Mallis
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    STEP-TO-STEP WEDGE THREAD CONNECTIONS AND RELATED METHODS
    • Publication number 20120074690
    • Publication date Mar 29, 2012
    • Hydril Company
    • David Llewellyn Mallis
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Application

    WEDGE THREADS WITH A SOLID LUBRICANT COATING
    • Publication number 20120038147
    • Publication date Feb 16, 2012
    • Hydril Company
    • David Llewellyn Mallis
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    WEDGE THREADS WITH A SOLID LUBRICANT COATING
    • Publication number 20110084477
    • Publication date Apr 14, 2011
    • Hydril Company
    • David Llewellyn Mallis
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Application

    WEDGE THREAD WITH TORQUE SHOULDER
    • Publication number 20100181763
    • Publication date Jul 22, 2010
    • Hydril Company LLC
    • David Llewellyn Mallis
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    THREADED CONNECTION WITH PERTURBED FLANKS
    • Publication number 20070158943
    • Publication date Jul 12, 2007
    • Hydril Company LP
    • David Llewellyn Mallis
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    WEDGE THREAD WITH HIGH-ANGLE METAL SEAL
    • Publication number 20060220382
    • Publication date Oct 5, 2006
    • Harris A. Reynolds
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Floating wedge thread for tubular connection
    • Publication number 20060145480
    • Publication date Jul 6, 2006
    • Hydril Company
    • David Llewellyn Mallis
    • E21 - EARTH DRILLING MINING
  • Information Patent Application

    Double flex seal for tubular connection
    • Publication number 20040108720
    • Publication date Jun 10, 2004
    • David L. Mallis
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Wedge thread with torque shoulder
    • Publication number 20020027363
    • Publication date Mar 7, 2002
    • David Llewellyn Mallis
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Double flex seal for tubular connection
    • Publication number 20020021006
    • Publication date Feb 21, 2002
    • David Llewellyn Mallis
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Application

    Tubular joint wear indicator
    • Publication number 20010015555
    • Publication date Aug 23, 2001
    • David Mallis
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...