Inventor
ENGELHARDT FRITZ
DE35 patents
⚠️ This page may combine multiple inventors who share the name “ENGELHARDT FRITZ”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CASSELLA FARBWERKE MAINKUR AG
14 patentsUS5530093AJun 25, 1996
Polycondensates containing phosphinic and phosphonic acid groups
CASSELLA FARBWERKE MAINKUR AG27 citations92
US5668236ASep 16, 1997
Hydrophilic highly swellable hydrogels
CASSELLA FARBWERKE MAINKUR AG37 citations91
US4576973AMar 18, 1986
Copolymer, process for its preparation and its use as a sorbent
CASSELLA FARBWERKE MAINKUR AG26 citations91
US5276248AJan 4, 1994
Process for the storage and transportation of liquid hydrocarbons
CASSELLA FARBWERKE MAINKUR AG21 citations89
US4588413AMay 13, 1986
Process for producing dyeings with reactive dyestuffs
CASSELLA FARBWERKE MAINKUR AG23 citations80
US4552905ANov 12, 1985
Copolymer, a process for its preparation and its use as a sorbent
CASSELLA FARBWERKE MAINKUR AG18 citations74
US5594083AJan 14, 1997
Water-swellable hydrophilic polymers
CASSELLA FARBWERKE MAINKUR AG5 citations73
US4877540AOct 31, 1989
Methylolated and optionally etherified urethanes containing fluoroalkyl ligands
CASSELLA FARBWERKE MAINKUR AG18 citations73
US4753999AJun 28, 1988
Copolymer, process for its preparation, and its use
CASSELLA FARBWERKE MAINKUR AG12 citations73
US4168145ASep 18, 1979
Branched low molecular weight polyesters levelling agents for dyestuff
CASSELLA FARBWERKE MAINKUR AG12 citations73
US5502231AMar 26, 1996
Process for the preparation of cyclic vinylphosphonic esters
CASSELLA FARBWERKE MAINKUR AG5 citations63
US5276247AJan 4, 1994
Process for obtaining the hydrocarbon from a hydrocarbon-rich gel
CASSELLA FARBWERKE MAINKUR AG3 citations61
US5571764ANov 5, 1996
Absorbent for water and aqueous solutions
CASSELLA FARBWERKE MAINKUR AG4 citations60
US4828570AMay 9, 1989
Tanning agent and a process for its preparation
CASSELLA FARBWERKE MAINKUR AG3 citations58
BASF AG
7 patentsUS6657015B1Dec 2, 2003
Method for the secondary cross-linking of hydrogels with 2-oxotetrahydro-1,3-oxazines
BASF AG205 citations99
US6559239B1May 6, 2003
Method for the secondary cross-linking of hydrogels with N-acyl-2-oxazolidinones
BASF AG223 citations99
US6503979B1Jan 7, 2003
Method for cross-linking hydrogels with bis- and poly-2-oxazolidinones
BASF AG173 citations99
US6472478B1Oct 29, 2002
Process for crosslinking hydrogels with bis- and poly-2- oxazolidinones
BASF AG230 citations99
US6565768B1May 20, 2003
Method for producing water-swellable hydorphilic polymers, said polymers and use thereof
BASF AG92 citations96
US6297335B1Oct 2, 2001
Crosslinked, hydrophilic, highly swellable hydrogels, production thereof and use thereof
BASF AG88 citations96
US6107432AAug 22, 2000
Water-swellable, hydrophilic polymer compositions
BASF AG28 citations93
HOECHST AG
7 patentsUS5731365AMar 24, 1998
Hydrophilic, highly swellable hydrogels
HOECHST AG153 citations98
US6150477ANov 21, 2000
Process for the preparation of hydrophilic hydrogels of high swelling capacity
HOECHST AG25 citations92
US5510436AApr 23, 1996
Water-soluble copolymers useful in drilling fluids
HOECHST AG37 citations91
US5792880AAug 11, 1998
Process for the preparation of N-lauroyl-L-glutamic acid di-n-butylamide
HOECHST AG3 citations62
US5523471AJun 4, 1996
Process for the preparation of ether-sulphonates
HOECHST AG5 citations60
US5492995AFeb 20, 1996
Polycondensates containing phosphinic or phosphonic acid groups and siloxane groups
HOECHST AG2 citations60
US5726331AMar 10, 1998
Dimethyl n-lauroyl-l-glutamate
HOECHST AG0 citations51