Patents by Inventor James David Bell

James David Bell 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 enhancing asphalt properties
    Patent number: 6258255
    Abstract: The invention relates to a method for making an asphalt product having an enhanced flash point and lower volatility, comprising vacuum distilling a blend of a high boiling petroleum fraction having an initial boiling point of at least 270° C. and a crude to produce a product asphalt having a flash of from 265° C. to 300° C.
    Type: Grant
    Filed: October 29, 1999
    Date of Patent: July 10, 2001
    Assignee: Exxon Research and Engineering Company
    Inventors: Mary Josephine Gale, Lyle Edwin Moran, James David Bell, Biddanda Umesh Achia