TREA

Charles N. Grichar

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  • Houston, TX, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Shale shaker
    • Patent number 7,581,647
    • Issue date Sep 1, 2009
    • Varco I/P, Inc.
    • Charles Newton Grichar
    • B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
  • Information Patent Grant

    Screen assembly for vibratory separator
    • Patent number 7,520,391
    • Issue date Apr 21, 2009
    • Varco I/P, Inc.
    • David L. Schulte, Jr.
    • B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
  • Information Patent Grant

    Screen basket and shale shakers
    • Patent number 7,216,767
    • Issue date May 15, 2007
    • Varco I/P, Inc.
    • David L. Schulte
    • B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
  • Information Patent Grant

    Dam basket for vibratory separators
    • Patent number 7,198,156
    • Issue date Apr 3, 2007
    • Varco I/P, Inc.
    • David L. Schulte
    • B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
  • Information Patent Grant

    Screen assembly for vibratory separators
    • Patent number 7,000,776
    • Issue date Feb 21, 2006
    • Varco I/P, Inc.
    • Joseph C. Winkler
    • B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
  • Information Patent Grant

    Screen assemblies for shale shakers
    • Patent number 6,769,550
    • Issue date Aug 3, 2004
    • Varco I/P, Inc.
    • Thomas C. Adams
    • B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
  • Information Patent Grant

    Glued screens for shale shakers
    • Patent number 6,736,270
    • Issue date May 18, 2004
    • Varco I/P, Inc.
    • Thomas C. Adams
    • B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
  • Information Patent Grant

    Vibratory separator
    • Patent number 6,715,611
    • Issue date Apr 6, 2004
    • Tuboscope I/P, Inc.
    • Mark Crabbe
    • B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
  • Information Patent Grant

    Methods for making glued shale shaker screens
    • Patent number 6,669,985
    • Issue date Dec 30, 2003
    • Varco I/P, Inc.
    • Thomas C. Adams
    • B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
  • Information Patent Grant

    Screen assembly for vibratory separators
    • Patent number 6,607,080
    • Issue date Aug 19, 2003
    • Varco I/P, Inc.
    • Joseph Charles Winkler
    • B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
  • Information Patent Grant

    Method for making vibratory separator screens
    • Patent number 6,565,698
    • Issue date May 20, 2003
    • Varco I/P, Inc.
    • Thomas C. Adams
    • B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
  • Information Patent Grant

    Vibrator separator screens
    • Patent number 6,454,099
    • Issue date Sep 24, 2002
    • Varco I/P, Inc.
    • Thomas C. Adams
    • B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
  • Information Patent Grant

    Glue pattern screens and methods of production
    • Patent number 6,450,345
    • Issue date Sep 17, 2002
    • Varco I/P, Inc.
    • Thomas C. Adams
    • B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
  • Information Patent Grant

    Vibratory separator
    • Patent number 6,412,644
    • Issue date Jul 2, 2002
    • Varco I/P, Inc.
    • Mark D Crabbe
    • B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
  • Information Patent Grant

    Screen basket for shale shakers
    • Patent number 6,371,301
    • Issue date Apr 16, 2002
    • Varco I/P, Inc.
    • David L. Schulte
    • B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
  • Information Patent Grant

    Vibratory separator screens
    • Patent number 6,371,302
    • Issue date Apr 16, 2002
    • Tuboscope I/P, Inc.
    • Thomas C. Adams
    • B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
  • Information Patent Grant

    Screen apparatus for vibratory separator
    • Patent number 6,325,216
    • Issue date Dec 4, 2001
    • Tuboscope I/P, Inc.
    • Kenneth W. Seyffert
    • B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
  • Information Patent Grant

    Vibratory separator screen assemblies
    • Patent number 6,269,953
    • Issue date Aug 7, 2001
    • Tuboscope I/P, Inc.
    • Kenneth W. Seyffert
    • B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
  • Information Patent Grant

    Flat top cloth support screen
    • Patent number 6,220,449
    • Issue date Apr 24, 2001
    • Tuboscope I/P, Inc.
    • David L. Schulte
    • B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
  • Information Patent Grant

    Screen apparatus for vibratory separator
    • Patent number 6,032,806
    • Issue date Mar 7, 2000
    • Tuboscope I/P, Inc.
    • Vincent D. Leone
    • B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
  • Information Patent Grant

    Screen assembly for a vibratory separator
    • Patent number 5,971,159
    • Issue date Oct 26, 1999
    • Tuboscope I/P, Inc.
    • Vincent D. Leone
    • B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
  • Information Patent Grant

    Shale shaker screen
    • Patent number 5,598,930
    • Issue date Feb 4, 1997
    • Advanced Wirecloth, Inc.
    • Vincent D. Leone
    • B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
  • Information Patent Grant

    High capacity continuous solid bowl centrifuge
    • Patent number 4,743,226
    • Issue date May 10, 1988
    • Geosource Inc.
    • Roger W. Day
    • B04 - CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL...
  • Information Patent Grant

    Solids mixing well structure and method
    • Patent number 4,505,591
    • Issue date Mar 19, 1985
    • Geosource Inc.
    • Roger W. Day
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

Patents Applicationslast 30 patents