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. 29, 2025
Filed:
Apr. 26, 2021
Applicant:
Chevron U.s.a. Inc., San Ramon, CA (US);
Inventors:
Gayani W. Pinnawala, San Ramon, CA (US);
Sujeewa S. Palayangoda, San Ramon, CA (US);
Gregory A. Winslow, San Ramon, CA (US);
Varadarajan Dwarakanath, San Ramon, CA (US);
Assignee:
CHEVRON U.S.A. INC., San Ramon, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/584 (2006.01); C09K 8/68 (2006.01); C09K 23/02 (2022.01); C09K 23/12 (2022.01);
U.S. Cl.
CPC ...
C09K 23/02 (2022.01); C09K 8/584 (2013.01); C09K 8/68 (2013.01); C09K 23/12 (2022.01);
Abstract
The present disclosure is directed to polyanionic surfactants, surfactant mixtures, compositions derived thereof, and uses thereof in hydrocarbon recovery. Methods of making polyanionic surfactants are also described.