Patents by Inventor Allen W. Thomas

Allen W. Thomas has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Apparatus and process for extracting sulfur compounds from a hydrocarbon stream
    Patent number: 7326333
    Abstract: Described is an apparatus and process for extracting sulfur compounds from a hydrocarbon stream. A prewash section for converting hydrogen sulfide to sodium sulfide by reaction with an alkali such as caustic communicates with an extractor section disposed directly above the prewash section for converting mercaptans to mercaptides by reaction with alkali. Hydrocarbon product exits the extractor section through a coalescer that prevents alkali from exiting with the hydrocarbon product stream.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: February 5, 2008
    Assignee: UOP LLC
    Inventors: Luigi Laricchia, Jonathan A. Tertel, Allen W. Thomas
  • Apparatus and process for extracting sulfur compounds from a hydrocarbon stream
    Publication number: 20040175307
    Abstract: Disclosed is an apparatus and process for extracting sulfur compounds from a hydrocarbon stream. A prewash section for converting hydrogen sulfide to sodium sulfide by reaction with an alkali such as caustic communicates with an extractor section disposed directly above the prewash section for converting mercaptans to mercaptides by reaction with alkali. Hydrocarbon product exits the extractor section through a coalescer that prevents alkali from exiting with the hydrocarbon product stream.
    Type: Application
    Filed: December 20, 2001
    Publication date: September 9, 2004
    Inventors: Luigi Laricchia, Jonathan A. Tertel, Allen W. Thomas