Patents by Inventor John K. Shipley

John K. Shipley 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).

  • Preparation of recarburizer coke
    Patent number: 5158668
    Abstract: Recarburizer coke containing not more than 0.1 weight percent sulfur and not more than 0.1 weight percent nitrogen is prepared by the catalytic hydrogenation, thermal cracking, and delayed coking of a mixture of pyrolysis tar and petroleum distillate.
    Type: Grant
    Filed: January 6, 1992
    Date of Patent: October 27, 1992
    Assignee: Conoco Inc.
    Inventors: Bharat S. Chahar, John K. Shipley