The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 26, 2022
Filed:
Dec. 30, 2020
Applicant:
Chevron U.s.a. Inc., San Ramon, CA (US);
Inventors:
Jay Parekh, San Ramon, CA (US);
Jifei Jia, Hercules, CA (US);
Guan-Dao Lei, San Ramon, CA (US);
Kenny Peinado, San Ramon, CA (US);
Yihua Zhang, Albany, CA (US);
Shanying Lee, Hercules, CA (US);
Assignee:
Chevron U.S.A. Inc., San Ramon, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10G 67/02 (2006.01); C10M 101/02 (2006.01); C10M 177/00 (2006.01); C10N 70/00 (2006.01);
U.S. Cl.
CPC ...
C10G 67/02 (2013.01); C10M 101/02 (2013.01); C10M 177/00 (2013.01); C10G 2300/301 (2013.01); C10G 2300/4018 (2013.01); C10G 2400/04 (2013.01); C10G 2400/10 (2013.01); C10M 2203/1006 (2013.01); C10N 2070/00 (2013.01);
Abstract
A process for preparing a base oil from a waxy hydrocarbon feedstock is provided. The process comprises passing the hydrocarbon feedstock to a distillation column prior to dewaxing in order to recover a heavy wax cut. The heavy wax is then hydrocracked to lower boiling compounds which can be better isomerized to a base oil with an acceptable cloud point. The base oil yield is also increased.