TREA

Allen D. Mathison

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  • Richfield, MN, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Assembly process for fabric bag plug
    • Patent number 5,643,386
    • Issue date Jul 1, 1997
    • Cherne Industries Incorporated
    • Allen D. Mathison
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Pipeline plug
    • Patent number D378695
    • Issue date Apr 1, 1997
    • Cherne Industries Incorporated
    • Allen D. Mathison
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Inflatable fabric bag plug
    • Patent number 5,546,991
    • Issue date Aug 20, 1996
    • Cherne Industries Incorporated
    • Allen D. Mathison
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Miniature pneumatic test plug assembly
    • Patent number D369652
    • Issue date May 7, 1996
    • Cherne Industries Incorporated
    • Allen D. Mathison
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Remote positioning pneumatic plug
    • Patent number D358871
    • Issue date May 30, 1995
    • Cherne Industries Incorporated
    • Allen D. Mathison
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Pneumatic plug for clean-out tees
    • Patent number 5,353,841
    • Issue date Oct 11, 1994
    • Cherne Industries Incorporated
    • Allen D. Mathison
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Mechanical inspection and sealing plug for a monitoring well
    • Patent number D351013
    • Issue date Sep 27, 1994
    • Cherne Industries Incorporated
    • Allen D. Mathison
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Pneumatic test plug
    • Patent number D350704
    • Issue date Sep 20, 1994
    • Cherne Industries Incorporated
    • Allen D. Mathison
    • D10 - Measuring, testing, or signalling instruments
  • Information Patent Grant

    Pipe plug lock unit
    • Patent number D329687
    • Issue date Sep 22, 1992
    • Cherne Industries Incorporated
    • Bryan R. Benson
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    Pipe plug latch unit
    • Patent number D329686
    • Issue date Sep 22, 1992
    • Cherne Industries Incorporated
    • Allen D. Mathison
    • D23 - Environmental heating and cooling
  • Information Patent Grant

    High pressure mechanical plug device
    • Patent number 4,817,671
    • Issue date Apr 4, 1989
    • Cherne Industries, Inc.
    • Allen D. Mathison
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Pipe joint sealing and testing apparatus
    • Patent number 4,763,511
    • Issue date Aug 16, 1988
    • Cherne Industries, Inc.
    • Allen D. Mathison
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Electronic test and seal apparatus and method
    • Patent number 4,691,728
    • Issue date Sep 8, 1987
    • Cherne Industries, Inc.
    • Allen D. Mathison
    • F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
  • Information Patent Grant

    Expansible pneumatic plug device
    • Patent number 4,614,206
    • Issue date Sep 30, 1986
    • Cherne Industries, Inc.
    • Allen D. Mathison
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Portable waterproofing apparatus
    • Patent number 4,588,110
    • Issue date May 13, 1986
    • Cherne Industries, Inc.
    • Dale K. Nelson
    • B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
  • Information Patent Grant

    Connector valve assembly for inflatable packer device
    • Patent number 4,572,228
    • Issue date Feb 25, 1986
    • Cherne Industries, Inc.
    • Richard E. Larson
    • G01 - MEASURING TESTING
  • Information Patent Grant

    Mechanical plug device
    • Patent number 4,493,344
    • Issue date Jan 15, 1985
    • Cherne Industries, Inc.
    • Allen D. Mathison
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL