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David K. Nelsen

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  • Ponca City, OK, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Delayed coking cycle time reduction
    • Patent number 5,891,310
    • Issue date Apr 6, 1999
    • Conoco Inc.
    • David K. Nelsen
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Reduction of metal stresses in delayed coking drums
    • Patent number 5,804,038
    • Issue date Sep 8, 1998
    • Conoco Inc.
    • David K. Nelsen
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...