Patents by Inventor Jeffery G. Southwick

Jeffery G. Southwick 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).

  • Preparing an aqueous alkaline solution for recovery of oil from a reservoir containing hard water
    Patent number: H475
    Abstract: An aqueous alkaline oil recovery fluid containing monovalent salt, and, optionally, preformed cosurfactant, is improved by using a mixture of alkaline silicate and carbonate salts in specified proportions as the alkaline material.
    Type: Grant
    Filed: October 24, 1986
    Date of Patent: June 7, 1988
    Assignee: Shell Oil Company
    Inventors: Jimmie B. Lawson, David R. Thigpen, Richard C. Nelson, Jeffery G. Southwick