Inventor
PERSINSKI LEONARD J
US15 patents
⚠️ This page may combine multiple inventors who share the name “PERSINSKI LEONARD J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CALGON CORP
8 patentsUS4640793AFeb 3, 1987
Synergistic scale and corrosion inhibiting admixtures containing carboxylic acid/sulfonic acid polymers
CALGON CORP201 citations98
US4936987AJun 26, 1990
Synergistic scale and corrosion inhibiting admixtures containing carboxylic acid/sulfonic acid polymers
CALGON CORP144 citations97
US4015991AApr 5, 1977
Low fluid loss cementing compositions containing hydrolyzed acrylamide/2-acrylamido-2-methylpropane sulfonic acid derivative copolymers and their use
CALGON CORP160 citations96
US3964921AJun 22, 1976
Well cementing composition having improved flow properties, containing phosphonobutane tricarboxylic acid, and method of use
CALGON CORP62 citations95
US5087376AFeb 11, 1992
Multifunctional scale inhibitors
CALGON CORP62 citations93
US4036660AJul 19, 1977
Methods of using cementing compositions having improved flow properties, containing sulfonated copolymers of styrene-maleic anhydride
CALGON CORP33 citations92
US4040854AAug 9, 1977
Methods of using cementing compositions having improved flow properties, containing phosphonobutane tricarboxylic acid
CALGON CORP30 citations81
US3952805AApr 27, 1976
Well cementing method using a composition having improved flow properties, containing sulfonated copolymers of styrene-maleic anhydride
CALGON CORP31 citations81
CLEARWATER INC
7 patentsUS6054417AApr 25, 2000
Rapid gel formation in hydrocarbon recovery
CLEARWATER INC137 citations96
US5693837ADec 2, 1997
Ferric alkyl amine citrates and methods of making them
CLEARWATER INC93 citations96
US5417287AMay 23, 1995
Hydrocarbon gels useful in formation fracturing
CLEARWATER INC74 citations96
US5647900AJul 15, 1997
Preparation of hydrocarbon gels from ferric sources, polycarboxylic acid compounds, and optional amines, in combination with phosphate esters
CLEARWATER INC52 citations92
US5614010AMar 25, 1997
Hydrocarbon gels useful in formation fracturing
CLEARWATER INC49 citations92
US5571315ANov 5, 1996
Hydrocarbon gels useful in formation fracturing
CLEARWATER INC42 citations92
US6004908ADec 21, 1999
Rapid gel formation in hydrocarbon recovery
CLEARWATER INC23 citations89