TREA

William K. Stephenson

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  • Sugarland, TX, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Method of clarifying oily waste water
    • Patent number 7,431,845
    • Issue date Oct 7, 2008
    • Nalco Company
    • Maria B. Manek
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    Desalting adjunct chemistry
    • Patent number 6,120,678
    • Issue date Sep 19, 2000
    • Nalco Chemical Company
    • William K. Stephenson
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Alkoxylated vinyl polymer demulsifiers
    • Patent number 5,196,486
    • Issue date Mar 23, 1993
    • Nalco Chemical Company
    • William K. Stephenson
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Refinery anti-foulant - asphaltene dispersant
    • Patent number 5,143,594
    • Issue date Sep 1, 1992
    • Nalco Chemical Company
    • William K. Stephenson
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Refinery anti-foulant - asphaltene dispersant
    • Patent number 5,100,531
    • Issue date Mar 31, 1992
    • Nalco Chemical Company
    • William K. Stephenson
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Asphaltene dispersants - inhibitors
    • Patent number 5,073,248
    • Issue date Dec 17, 1991
    • Nalco Chemical Company
    • William K. Stephenson
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Fuel dewatering additives
    • Patent number 5,028,239
    • Issue date Jul 2, 1991
    • Nalco Chemical Company
    • William K. Stephenson
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Asphaltene dispersants - inhibitors
    • Patent number 5,021,498
    • Issue date Jun 4, 1991
    • Nalco Chemical Company
    • William K. Stephenson
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    Alkoxylated vinyl polymer demulsifiers
    • Patent number 4,968,449
    • Issue date Nov 6, 1990
    • Nalco Chemical Company
    • William K. Stephenson
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL

Patents Applicationslast 30 patents

  • Information Patent Application

    Method of clarifying oily waste water
    • Publication number 20060289359
    • Publication date Dec 28, 2006
    • Maria B. Manek
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL