PERSINSKI; LEONARD J.

Patent Applications and Registrations

Patent applications and USPTO patent grants for PERSINSKI; LEONARD J..The latest application filed is for "effervescent biocide compositions for oilfield applications".

Company Profile

0.14.1

PERSINSKI; LEONARD J. - PITTSBURGH PA

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Effervescent Biocide Compositions For Oilfield Applications App 20080004189 - SMITH; KEVIN ; et al.	2008-01-03
Rapid gel formation in hydrocarbon recovery Grant 6,054,417 - Graham , et al. April 25, 2	2000-04-25
Rapid gel formation in hydrocarbon recovery Grant 6,004,908 - Graham , et al. December 21, 1	1999-12-21
Ferric alkyl amine citrates and methods of making them Grant 5,693,837 - Smith , et al. December 2, 1	1997-12-02
Preparation of hydrocarbon gels from ferric sources, polycarboxylic acid compounds, and optional amines, in combination with phosphate esters Grant 5,647,900 - Smith , et al. July 15, 1	1997-07-15
Hydrocarbon gels useful in formation fracturing Grant 5,571,315 - Smith , et al. November 5, 1	1996-11-05
Hydrocarbon gels useful in formation fracturing Grant 5,417,287 - Smith , et al. May 23, 1	1995-05-23
Multifunctional scale inhibitors Grant 5,087,376 - Bendiksen , et al. February 11, 1	1992-02-11
Synergistic scale and corrosion inhibiting admixtures containing carboxylic acid/sulfonic acid polymers Grant 4,936,987 - Persinski , et al. June 26, 1	1990-06-26
Synergistic scale and corrosion inhibiting admixtures containing carboxylic acid/sulfonic acid polymers Grant 4,640,793 - Persinski , et al. February 3, 1	1987-02-03
Methods of using cementing compositions having improved flow properties, containing phosphonobutane tricarboxylic acid Grant 4,040,854 - Persinski , et al. * August 9, 1	1977-08-09
Methods of using cementing compositions having improved flow properties, containing sulfonated copolymers of styrene-maleic anhydride Grant 4,036,660 - Persinski , et al. * July 19, 1	1977-07-19
Low fluid loss cementing compositions containing hydrolyzed acrylamide/2-acrylamido-2-methylpropane sulfonic acid derivative copolymers and their use Grant 4,015,991 - Persinski , et al. April 5, 1	1977-04-05
Well cementing composition having improved flow properties, containing phosphonobutane tricarboxylic acid, and method of use Grant 3,964,921 - Persinski , et al. June 22, 1	1976-06-22
Well cementing method using a composition having improved flow properties, containing sulfonated copolymers of styrene-maleic anhydride Grant 3,952,805 - Persinski , et al. April 27, 1	1976-04-27

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