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:
Aug. 26, 2025
Filed:
Nov. 22, 2021
Applicant:
Chevron U.s.a. Inc., San Ramon, CA (US);
Inventors:
Yihua Zhang, Albany, CA (US);
Adeola Florence Ojo, Pleasant Hill, CA (US);
Guan-Dao Lei, Walnut Creek, CA (US);
Assignee:
CHEVRON U.S.A. INC., San Ramon, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10G 45/64 (2006.01); B01J 23/42 (2006.01); B01J 29/74 (2006.01); B01J 29/80 (2006.01); B01J 37/02 (2006.01); B01J 37/04 (2006.01); B01J 37/08 (2006.01); C10M 109/02 (2006.01); C10M 177/00 (2006.01); B01J 29/06 (2006.01); C10N 30/02 (2006.01);
U.S. Cl.
CPC ...
C10G 45/64 (2013.01); B01J 29/7461 (2013.01); B01J 29/7469 (2013.01); B01J 29/80 (2013.01); B01J 37/0201 (2013.01); B01J 37/04 (2013.01); B01J 37/088 (2013.01); C10M 109/02 (2013.01); C10M 177/00 (2013.01); B01J 2029/062 (2013.01); C10G 2300/202 (2013.01); C10G 2300/301 (2013.01); C10G 2300/302 (2013.01); C10G 2300/304 (2013.01); C10G 2300/308 (2013.01); C10G 2300/4006 (2013.01); C10G 2300/4012 (2013.01); C10G 2300/4018 (2013.01); C10G 2400/10 (2013.01); C10M 2203/1006 (2013.01); C10N 2030/02 (2013.01);
Abstract
An improved hydroisomerization catalyst and process for making a base oil product using a catalyst comprising SSZ-91 molecular sieve and ZSM-12 molecular sieve. The catalyst and process generally involves the use of a catalyst comprising an SSZ-91 molecular sieve combined with a ZSM-12 molecular sieve to produce dewaxed base oil products by contacting the catalyst with a hydrocarbon feedstock. The catalyst and process provide improved base oil cold properties, such as pour point and cloud point, along with other beneficial base oil properties.