Patents by Inventor Dave L. Blakeburn, II

Dave L. Blakeburn, II 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).

  • Binder pitch and method of preparation
    Patent number: 4959139
    Abstract: Binder pitch is prepared by combining a petroleum aromatic mineral oil thermal tar and super finely subdivided calcined premium coke particles. The petroleum aromatic mineral oil thermal tar is obtained by hydrotreating, thermally cracking and vacuum distilling an aromatic mineral oil. Additionally, the aromatic mineral oil thermal tar may be subjected to heat soaking.
    Type: Grant
    Filed: January 9, 1989
    Date of Patent: September 25, 1990
    Assignee: Conoco Inc.
    Inventors: Dave L. Blakeburn, II, Ta-Wei Fu, Keith M. Roussel