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Francis J. Shell

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  • Bartlesville, OK, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Enzymatic decomposition of drilling mud
    • Patent number 5,165,477
    • Issue date Nov 24, 1992
    • Phillips Petroleum Company
    • Francis J. Shell
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Enzymatic decomposition of drilling mud
    • Patent number 5,126,051
    • Issue date Jun 30, 1992
    • Phillips Petroleum Company
    • Francis J. Shell
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Workover fluid
    • Patent number 4,559,149
    • Issue date Dec 17, 1985
    • Phillips Petroleum Company
    • Francis J. Shell
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    Workover and completion fluids
    • Patent number 4,502,969
    • Issue date Mar 5, 1985
    • Phillips Petroleum Company
    • Francis J. Shell
    • E21 - EARTH DRILLING MINING