TREA

Hedayat H. Hassanzadeh

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  • Houston, TX, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Well completion apparatus
    • Patent number 5,150,756
    • Issue date Sep 29, 1992
    • Davis-Lynch, Inc.
    • Hedayat H. Hassanzadeh
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Casing centralizer
    • Patent number 4,909,322
    • Issue date Mar 20, 1990
    • Davis-Lynch, Inc.
    • Ronnie G. Patterson
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Auto-fill flow valve
    • Patent number 4,625,762
    • Issue date Dec 2, 1986
    • Weatherford U.S., Inc.
    • Hedayat H. Hassanzadeh
    • E21 - EARTH DRILLING MINING