Inventor · disambiguated record
Leonard J. Persinski
Also filed as: PERSINSKI LEONARD J
15 granted patents·1 pending application·1,193 citations·filing 1975–2006
96Inventor score
Top patents by PatentIndex Score
16 records- 0198US4936987ASynergistic scale and corrosion inhibiting admixtures containing carboxylic acid/sulfonic acid polymersCALGON CORP·Filed 1988·Granted Jun 26, 1990·144 cites·1 claims
- 0298US4640793ASynergistic scale and corrosion inhibiting admixtures containing carboxylic acid/sulfonic acid polymersCALGON CORP·Filed 1985·Granted Feb 3, 1987·201 cites·6 claims
- 0397US4015991ALow fluid loss cementing compositions containing hydrolyzed acrylamide/2-acrylamido-2-methylpropane sulfonic acid derivative copolymers and their useCALGON CORP·Filed 1976·Granted Apr 5, 1977·160 cites·3 claims
- 0494US3964921AWell cementing composition having improved flow properties, containing phosphonobutane tricarboxylic acid, and method of useCALGON CORP·Filed 1975·Granted Jun 22, 1976·62 cites·15 claims
- 0592US6054417ARapid gel formation in hydrocarbon recoveryCLEARWATER INC·Filed 1999·Granted Apr 25, 2000·137 cites·7 claims
- 0690US5087376AMultifunctional scale inhibitorsCALGON CORP·Filed 1990·Granted Feb 11, 1992·62 cites·7 claims
- 0789US5693837AFerric alkyl amine citrates and methods of making themCLEARWATER INC·Filed 1996·Granted Dec 2, 1997·93 cites·8 claims
- 0888US5417287AHydrocarbon gels useful in formation fracturingCLEARWATER INC·Filed 1994·Granted May 23, 1995·74 cites·12 claims
- 0984US4036660AMethods of using cementing compositions having improved flow properties, containing sulfonated copolymers of styrene-maleic anhydrideCALGON CORP·Filed 1976·Granted Jul 19, 1977·33 cites·6 claims
- 1080US5614010AHydrocarbon gels useful in formation fracturingCLEARWATER INC·Filed 1996·Granted Mar 25, 1997·49 cites·16 claims
- 1180US3952805AWell cementing method using a composition having improved flow properties, containing sulfonated copolymers of styrene-maleic anhydrideCALGON CORP·Filed 1975·Granted Apr 27, 1976·31 cites·8 claims
- 1279US4040854AMethods of using cementing compositions having improved flow properties, containing phosphonobutane tricarboxylic acidCALGON CORP·Filed 1976·Granted Aug 9, 1977·30 cites·6 claims
- 1376US5647900APreparation of hydrocarbon gels from ferric sources, polycarboxylic acid compounds, and optional amines, in combination with phosphate estersCLEARWATER INC·Filed 1996·Granted Jul 15, 1997·52 cites·21 claims
- 1475US5571315AHydrocarbon gels useful in formation fracturingCLEARWATER INC·Filed 1995·Granted Nov 5, 1996·42 cites·20 claims
- 1567US6004908ARapid gel formation in hydrocarbon recoveryCLEARWATER INC·Filed 1998·Granted Dec 21, 1999·23 cites·8 claims
- 1643US2008004189A1Effervescent biocide compositions for oilfield applicationsWEATHERFORD LAMB·Filed 2006·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →