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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.:

US 11858878 B1

PDFFull Text
Date of Patent:
Jan. 02, 2024

Filed:

Nov. 03, 2022

Gemini surfactant composition and method for treating subterranean rock

Applicant:

King Fahd University of Petroleum and Minerals, Dhahran, SA;

Inventors:

Syed M. Shakil Hussain, Dhahran, SA;

Muhammad Shahzad Kamal, Dhahran, SA;

Abdullah S. Sultan, Dhahran, SA;

Assignee:

KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran, SA;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

John J Figueroa

Int. Cl.
CPC ...
C07C 237/16 (2006.01); C09K 8/584 (2006.01); C07C 381/06 (2006.01); C11D 1/00 (2006.01); C07C 233/36 (2006.01); C07C 233/38 (2006.01); C07C 231/02 (2006.01); E21B 43/16 (2006.01);
U.S. Cl.
CPC ...
C07C 237/16 (2013.01); C07C 233/36 (2013.01); C07C 233/38 (2013.01); C07C 381/06 (2013.01); C09K 8/584 (2013.01); C11D 1/00 (2013.01); C07C 231/02 (2013.01); C09K 2208/30 (2013.01); E21B 43/16 (2013.01);
Abstract

The invention concerns synthesized amido-amine-based cationic gemini surfactants with flexible and rigid spacers and different hydrophobic. These gemini surfactants were prepared by modified procedure through amidation of long chain carboxylic acids using 3-(dimethylamino)-1-propylamine followed by treatment with halohydrocarbons and showed excellent thermal stability and surface properties useful for various oilfield applications such as enhanced oil recovery.

Find Patent Forward Citations

Hussain, Syed M. Shakil. (2024). Gemini surfactant composition and method for treating subterranean rock (U.S. Patent No. 11858878). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11858878

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