Patents by Inventor Winnie Lieu

Winnie Lieu 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).

  • Upgrading of renewable feedstocks with spent equilibrium catalyst
    Patent number: 10947458
    Abstract: A process is provided for upgrading a renewable feedstock. The process includes introducing the renewable feedstock into a fluid catalytic cracking (FCC) reactor unit operating under catalytic cracking conditions and comprising a circulating inventory of an equilibrium catalyst composition; removing a portion of the equilibrium catalyst inventory from the FCC reactor unit while replacing all the equilibrium catalyst removed from the unit with a spent catalyst to obtain a composite circulating catalyst within the FCC reactor unit; and contacting the composite circulating catalyst with the renewable feedstock in the FCC reactor unit under a steady state environment to provide a product stream comprising cracked products.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: March 16, 2021
    Assignee: CHEVRON U.S.A. INC.
    Inventors: Tengfei Liu, Mingting Xu, Kandaswamy Jothimurugesan, Richard Grove, Michael K. Maholland, Michelle Young, Winnie Lieu, Cameron McCord