Patents by Inventor Darrel L. Gallup

Darrel L. Gallup 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).

  • Method for reducing the selenium concentration in an oil refinery effluent
    Patent number: 5601721
    Abstract: Selenium exists in oil refinery stripped sour water as selenocyanate and can be effectively removed using an acrylic, strong base, anion exchange column or stannous chloride. The acrylic, strong base, anion exchange column can also be employed to remove arsenic, iron, and vanadium from an aqueous fluid.
    Type: Grant
    Filed: April 29, 1994
    Date of Patent: February 11, 1997
    Assignee: Union Oil Company of California
    Inventors: Ronald J. Lukasiewicz, Darrel L. Gallup, Brian J. Kelly