Patents by Inventor Eric D. Ewen

Eric D. Ewen 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).

  • Esterification of wax oxidates
    Patent number: 4548754
    Abstract: A method for esterifying an unsweated, oil containing wax oxidate includes the use of an alcohol such as methanol and an organic sulfonic acid such as methane sulfonic acid. The use of methane sulfonic acid results in the clean separation of the ester from water which is used to wash the acid catalyst from the ester after esterification. Previously, the use of a strong mineral acid such as sulfuric acid resulted in an emulsion forming after the esterification of an unsweated oil containing wax oxidate.
    Type: Grant
    Filed: August 24, 1983
    Date of Patent: October 22, 1985
    Assignee: Texaco Inc.
    Inventors: Frederic F. Day, William J. Powers, III, Eric D. Ewen, Gerald L. Piper