TREA

Owen S. Denman

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  • Rio Vista, CA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Apparatus with collapsible modules for absorbing energy from the im...
    • Patent number 6,811,144
    • Issue date Nov 2, 2004
    • Owen S. Denman
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Energy absorption apparatus with collapsible modules
    • Patent number 6,536,986
    • Issue date Mar 25, 2003
    • Barrier Systems, Inc.
    • Marco Anghileri
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Traffic barrier with liquid filled modules
    • Patent number 6,474,904
    • Issue date Nov 5, 2002
    • Barrier Systems, Inc.
    • John W. Duckett
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Guardrail with slidable impact-receiving element
    • Patent number 6,173,943
    • Issue date Jan 16, 2001
    • Energy Absorption Systems, Inc.
    • James B. Welch
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Highway barrier and guardrail
    • Patent number 6,142,452
    • Issue date Nov 7, 2000
    • Energy Absorption Systems, Inc.
    • Owen S. Denman
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Highway barrier and guardrail
    • Patent number 5,967,497
    • Issue date Oct 19, 1999
    • Energy Absorption Systems, Inc.
    • Owen S. Denman
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Shear loading energy absorbing device
    • Patent number 5,403,113
    • Issue date Apr 4, 1995
    • Energy Absorption Systems, Inc.
    • David C. Gertz
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Inertial barrier array
    • Patent number 4,934,661
    • Issue date Jun 19, 1990
    • Energy Absorption Systems, Inc.
    • Owen S. Denman
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Collapsible highway barrier
    • Patent number 4,784,515
    • Issue date Nov 15, 1988
    • Energy Absorption Systems, Inc.
    • William G. Krage
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Vehicle impact attenuating device
    • Patent number 4,711,481
    • Issue date Dec 8, 1987
    • Energy Absorption Systems, Inc.
    • William G. Krage
    • B60 - VEHICLES IN GENERAL
  • Information Patent Grant

    Expanded cell crash cushion
    • Patent number 4,666,130
    • Issue date May 19, 1987
    • Energy Absorption Systems, Inc.
    • Owen S. Denman
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Guardrail end terminal
    • Patent number 4,607,824
    • Issue date Aug 26, 1986
    • Energy Absorption Systems, Inc.
    • William G. Krage
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    Shear action and compression energy absorber
    • Patent number 4,352,484
    • Issue date Oct 5, 1982
    • Energy Absorption Systems, Inc.
    • David C. Gertz
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES

Patents Applicationslast 30 patents