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:
Apr. 18, 2023
Filed:
Nov. 22, 2019
Applicant:
Petrochina Company Limited, Beijing, CN;
Inventors:
Xiangfei Geng, Beijing, CN;
Bin Ding, Beijing, CN;
Jianhui Luo, Beijing, CN;
Bo Huang, Beijing, CN;
Jianyong Xie, Beijing, CN;
Pingmei Wang, Beijing, CN;
Yang Gao, Beijing, CN;
Baoliang Peng, Beijing, CN;
Assignee:
PetroChina Company Limited, Beijing, CN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 43/16 (2006.01); C09K 8/60 (2006.01); C07C 303/06 (2006.01); C07C 309/49 (2006.01);
U.S. Cl.
CPC ...
C09K 8/604 (2013.01); C07C 303/06 (2013.01); C07C 309/49 (2013.01); C09K 2208/06 (2013.01);
Abstract
The present invention discloses a N,N,N',N′-tetradodecyl-substituted diphenyl ether sulfonate anionic Gemini surfactant and the synthesis method thereof. It has a structural formula of: