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:
Dec. 02, 2025
Filed:
Jan. 18, 2022
Applicant:
Chevron U.s.a. Inc., San Ramon, CA (US);
Inventors:
Yihua Zhang, Albany, CA (US);
Guan-Dao Lei, Walnut Creek, CA (US);
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10G 45/62 (2006.01); B01J 29/74 (2006.01); C10G 45/64 (2006.01); C10G 65/04 (2006.01); C10G 67/04 (2006.01);
U.S. Cl.
CPC ...
C10G 67/0418 (2013.01); B01J 29/7461 (2013.01); C10G 45/62 (2013.01); C10G 45/64 (2013.01); C10G 65/043 (2013.01); C10G 2300/1022 (2013.01); C10G 2300/304 (2013.01); C10G 2400/10 (2013.01);
Abstract
Described are processes to produce base oils with one more improved properties, e.g., lower aromatics, economically and/or efficiently. In some embodiments the processes comprise a step that reduces the amount of residual refractory sulfur compounds prior to or simultaneous with a hydrofinishing step which advantageously provides base oils with lower aromatics than comparable processes.