Patents by Inventor Steve D. Harris

Steve D. Harris 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).

  • Patent number: 5028311
    Abstract: Premium coke having a low coefficient of thermal expansion and containing reduced fluff coke is obtained by subjecting an aromatic mineral oil to reduced temperature delayed coking, thereafter converting uncoked oil in the coke drum to coke under delayed coking conditions by continuing coking in the presence of a aromatic mineral oil capable forming coke admixed with a non-coking material circulated through the coke drum as a heating fluid. After termination of the heating fluid, the coke in the coke drum is subjected to a heat soak in the presence of a non-coking material at an elevated temperature preferably above the delayed coking conditions.
    Type: Grant
    Filed: April 12, 1990
    Date of Patent: July 2, 1991
    Assignee: Conoco Inc.
    Inventors: John K. Shigley, Keith M. Roussel, Steve D. Harris