Inventor
SPARAPANY JOHN W
US14 patents
⚠️ This page may combine multiple inventors who share the name “SPARAPANY JOHN W”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NALCO CHEMICAL CO
13 patentsUS5179173AJan 12, 1993
Aminoalkylphosphinates and phosphinic acid-containing polymers therefrom
NALCO CHEMICAL CO61 citations95
US5164095ANov 17, 1992
Dithiocarbamate polymers
NALCO CHEMICAL CO89 citations95
US5346627ASep 13, 1994
Method for removing metals from a fluid stream
NALCO CHEMICAL CO83 citations94
US5938937AAug 17, 1999
Hydrophilic dispersion polymers for treating wastewater
NALCO CHEMICAL CO50 citations92
US6398967B2Jun 4, 2002
Method of clarifying water using low molecular weight cationic dispersion polymers
NALCO CHEMICAL CO21 citations90
US6238486B1May 29, 2001
Detectable cationic flocculant and method of using same in industrial food processes
NALCO CHEMICAL CO18 citations83
US4921904AMay 1, 1990
Superabsorbent polymers
NALCO CHEMICAL CO22 citations80
US5093413AMar 3, 1992
Cationic polymers for sludge dewatering
NALCO CHEMICAL CO19 citations77
US5338816AAug 16, 1994
Hydrophobic polyelectrolytes used in removing color
NALCO CHEMICAL CO15 citations73
US5283306AFeb 1, 1994
Hydrophobic polyelectrolytes used in removing color
NALCO CHEMICAL CO13 citations73
US5137641AAug 11, 1992
Cationic polymers for sludge dewatering
NALCO CHEMICAL CO17 citations73
US5143622ASep 1, 1992
Phosphinic acid-containing polymers and their use in preventing scale and corrosion
NALCO CHEMICAL CO15 citations72
US4868248ASep 19, 1989
Polyhydroxyamic acid polymers from polyacrylic acids
NALCO CHEMICAL CO15 citations71