TREA

Daniel L. Hertz Jr.

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  • Red Bank, NJ, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Multilayer, multihardness seal
    • Patent number 4,720,113
    • Issue date Jan 19, 1988
    • Seals Eastern Inc.
    • Daniel L. Hertz
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Annular seal with V-cut
    • Patent number 4,524,981
    • Issue date Jun 25, 1985
    • Smith International, Inc.
    • Daniel L. Hertz
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Seal for aggressive environments
    • Patent number 4,524,982
    • Issue date Jun 25, 1985
    • Seals Eastern Inc.
    • Daniel L. Hertz
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Seal for geothermal wells and the like
    • Patent number 4,270,761
    • Issue date Jun 2, 1981
    • Seals Eastern Inc.
    • Daniel L. Hertz
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Multilayer seal
    • Patent number 4,185,840
    • Issue date Jan 29, 1980
    • Seals Eastern Inc.
    • Daniel L. Hertz
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...