Quaternary ammonium salts as thickening agents for aqueous systems

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Aug 17, 2010
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Jul 19, 2007
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Feb 1, 2007
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Sep 7, 1999

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Abstract

This invention relates to the use of alkyl amido quaternary ammonium salts, and formulations thereof, as thickening agents in aqueous based fluids, especially those used in oil field applications. The quaternary ammonium salts of the present invention exhibit improved gelling characteristics.

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NOURYON SURFACE CHEMISTRY LLC	525 W VAN BUREN STREET CHICAGO IL 60607-3823

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Inventor Name	Address	# of filed Patents	Total Citations
Burgazli, Cenk	Cardington, US	3	27
Feuerbacher, Dave	Cypress, US	4	46
Subramanian, Shankar	Dublin, US	12	116
Zhu, Shawn	Stormville, US	52	133
Zhu, Yun-Peng	Columbus, US	30	281

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Quaternary ammonium salts as thickening agents for aqueous systems

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United States of America Patent

11701353

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PATENT NO	7776798
APP PUB NO	20070167332A1
SERIAL NO	11701353
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
August 17, 2010	US,7776798,B2 US7776798B2	GRANTED PATENT AS SECOND PUBLICATION
July 19, 2007	US,20070167332,A1 US20070167332A1	FIRST PUBLISHED PATENT APPLICATION

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11701353

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