TREA

Douglas VOLDEN

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  • Park Ridge, IL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Mechanical seal with banded ring
    • Patent number 7,857,319
    • Issue date Dec 28, 2010
    • John Crane Inc.
    • Thomas Steigerwald
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Barrier seal systems
    • Patent number 6,210,107
    • Issue date Apr 3, 2001
    • John Crane Inc.
    • Douglas J. Volden
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Gas lubricated barrier seal
    • Patent number 5,713,576
    • Issue date Feb 3, 1998
    • John Crane Inc.
    • James R. Wasser
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Secondary containment seal
    • Patent number 5,375,853
    • Issue date Dec 27, 1994
    • John Crane Inc.
    • James R. Wasser
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Barrier seal systems
    • Patent number 5,249,812
    • Issue date Oct 5, 1993
    • John Crane Inc.
    • Douglas J. Volden
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...

Patents Applicationslast 30 patents

  • Information Patent Application

    MECHANICAL SEAL WITH BANDED RING
    • Publication number 20070284830
    • Publication date Dec 13, 2007
    • John Crane Inc.
    • Thomas STEIGERWALD
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...