Patents by Inventor Bi-Zheng ZHAN

Bi-Zheng ZHAN 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).

  • HYDROCRACKING OPERATION WITH REDUCED ACCUMULATION OF HEAVY POLYNUCLEAR AROMATICS
    Publication number: 20240101913
    Abstract: Provided is a hydrocracking process with a recycle loop for converting a petroleum feed to lower boiling products, which process comprises reacting a stream over a non-zeolite noble metal catalyst at a temperature of about 650° F. (343° C.) or less in a reactor positioned in the recycle loop of the hydrocracking reactor.
    Type: Application
    Filed: December 29, 2021
    Publication date: March 28, 2024
    Applicant: CHEVRON U.S.A. INC.
    Inventors: Ling JIAO, Bi-Zheng ZHAN, Don BUSHEE, Theodorus Ludovicus Michael MAESEN, Hye-Kyung TIMKEN, Richard DUTTA, Jay PAREKH