Patents by Inventor Donn R. Friedman

Donn R. Friedman 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).

  • Heavy naphtha hydroconversion process
    Patent number: 5624548
    Abstract: A straight run naphtha is fractionated to yield on intermediate naphtha and the heaviest 10-25 vol % as heavy naphtha. The heavy naphtha is subjected to hydrocracking to yield liquid fuel and lighter, including C.sub.4 isoparaffins and a cracked naphtha having a 90 vol % temperature (T90) of 310.degree. F. (155.degree. C.).
    Type: Grant
    Filed: July 21, 1994
    Date of Patent: April 29, 1997
    Assignee: Texaco Inc.
    Inventors: Donn R. Friedman, Hsu-Hui Hsing, Richard G. Nelson, Ooriapadical C. Abraham