Patents by Inventor D. D. Orrell

D. D. Orrell 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).

  • Eliminating foaming in hydrocarbon distillations
    Patent number: 4473465
    Abstract: A method for eliminating foam in hydrocarbon distillation systems where the foaming is caused by an ionic surface-active substance is involved. Foam is eliminated by the addition of an effective amount of a surfactant electrolytically opposite to the surface-active material already in the system. The surfactant added and the surface-active substance already in the system complex to form a non-foaming combination, allowing distillation to proceed without foaming.
    Type: Grant
    Filed: January 17, 1983
    Date of Patent: September 25, 1984
    Assignee: Conoco Inc.
    Inventors: Fred C. Veatch, D. D. Orrell