Inventor · disambiguated record
Fritz Engelhardt
Also filed as: ENGELHARDT FRITZ
35 granted patents·1 pending application·1,830 citations·filing 1977–2002
98Inventor score
Top patents by PatentIndex Score
36 records- 0198US6657015B1Method for the secondary cross-linking of hydrogels with 2-oxotetrahydro-1,3-oxazinesBASF AG·Filed 1999·Granted Dec 2, 2003·205 cites·16 claims
- 0298US6559239B1Method for the secondary cross-linking of hydrogels with N-acyl-2-oxazolidinonesBASF AG·Filed 1999·Granted May 6, 2003·223 cites·14 claims
- 0398US6472478B1Process for crosslinking hydrogels with bis- and poly-2- oxazolidinonesBASF AG·Filed 1999·Granted Oct 29, 2002·230 cites·15 claims
- 0497US6503979B1Method for cross-linking hydrogels with bis- and poly-2-oxazolidinonesBASF AG·Filed 1998·Granted Jan 7, 2003·173 cites·15 claims
- 0596US5731365AHydrophilic, highly swellable hydrogelsHOECHST AG·Filed 1995·Granted Mar 24, 1998·153 cites·10 claims
- 0692US6297335B1Crosslinked, hydrophilic, highly swellable hydrogels, production thereof and use thereofBASF AG·Filed 1999·Granted Oct 2, 2001·88 cites·14 claims
- 0792US5840321AHydrophilic, highly swellable hydrogelsCLARIANT GMBH·Filed 1996·Granted Nov 24, 1998·73 cites·16 claims
- 0888US6417425B1Absorbent article and process for preparing an absorbent articleBASF CORP·Filed 2000·Granted Jul 9, 2002·184 cites·4 claims
- 0985US6565768B1Method for producing water-swellable hydorphilic polymers, said polymers and use thereofBASF AG·Filed 1999·Granted May 20, 2003·92 cites·26 claims
- 1081US4588413AProcess for producing dyeings with reactive dyestuffsCASSELLA FARBWERKE MAINKUR AG·Filed 1984·Granted May 13, 1986·23 cites·10 claims
- 1180US5510436AWater-soluble copolymers useful in drilling fluidsHOECHST AG·Filed 1994·Granted Apr 23, 1996·37 cites·22 claims
- 1279US4576973ACopolymer, process for its preparation and its use as a sorbentCASSELLA FARBWERKE MAINKUR AG·Filed 1984·Granted Mar 18, 1986·26 cites·5 claims
- 1379US4168145ABranched low molecular weight polyesters levelling agents for dyestuffCASSELLA FARBWERKE MAINKUR AG·Filed 1977·Granted Sep 18, 1979·12 cites·14 claims
- 1476US4552905ACopolymer, a process for its preparation and its use as a sorbentCASSELLA FARBWERKE MAINKUR AG·Filed 1984·Granted Nov 12, 1985·18 cites·11 claims
- 1575US6107432AWater-swellable, hydrophilic polymer compositionsBASF AG·Filed 1998·Granted Aug 22, 2000·28 cites·9 claims
- 1673US5945495AUse of surfactants in the drying of hydrophilic highly swellable hydrogelsBASF CORP·Filed 1997·Granted Aug 31, 1999·29 cites·13 claims
- 1773US5530093APolycondensates containing phosphinic and phosphonic acid groupsCASSELLA FARBWERKE MAINKUR AG·Filed 1995·Granted Jun 25, 1996·27 cites·15 claims
- 1871US5684104AWater-swellable hydrophilic polymersCASSELLA·Filed 1996·Granted Nov 4, 1997·26 cites·19 claims
- 1968US5276248AProcess for the storage and transportation of liquid hydrocarbonsCASSELLA FARBWERKE MAINKUR AG·Filed 1992·Granted Jan 4, 1994·21 cites·20 claims
- 2063US4753999ACopolymer, process for its preparation, and its useCASSELLA FARBWERKE MAINKUR AG·Filed 1987·Granted Jun 28, 1988·12 cites·12 claims
- 2160US4877540AMethylolated and optionally etherified urethanes containing fluoroalkyl ligandsCASSELLA FARBWERKE MAINKUR AG·Filed 1988·Granted Oct 31, 1989·18 cites·15 claims
- 2254US5668236AHydrophilic highly swellable hydrogelsCASSELLA FARBWERKE MAINKUR AG·Filed 1996·Granted Sep 16, 1997·37 cites·18 claims
- 2353US5502231AProcess for the preparation of cyclic vinylphosphonic estersCASSELLA FARBWERKE MAINKUR AG·Filed 1995·Granted Mar 26, 1996·5 cites·13 claims
- 2450US5523471AProcess for the preparation of ether-sulphonatesHOECHST AG·Filed 1995·Granted Jun 4, 1996·5 cites·10 claims
- 2548US5792880AProcess for the preparation of N-lauroyl-L-glutamic acid di-n-butylamideHOECHST AG·Filed 1997·Granted Aug 11, 1998·3 cites·7 claims
- 2647US6150477AProcess for the preparation of hydrophilic hydrogels of high swelling capacityHOECHST AG·Filed 1997·Granted Nov 21, 2000·25 cites·14 claims
- 2747US5258448AAbsorbent polymers, manufacturing process and their use in particular for sanitary articlesHOECHST FRANCE·Filed 1992·Granted Nov 2, 1993·26 cites·20 claims
- 2843US5594083AWater-swellable hydrophilic polymersCASSELLA FARBWERKE MAINKUR AG·Filed 1995·Granted Jan 14, 1997·5 cites·19 claims
- 2940US2003045847A1Absorbent articleFiled 2002·Application pending·0 cites
- 3037US4828570ATanning agent and a process for its preparationCASSELLA FARBWERKE MAINKUR AG·Filed 1986·Granted May 9, 1989·3 cites·17 claims
- 3135US5274048AUse of glycidyl phosphonates as crosslinkers in the preparation of hydrogelsCASSELLA AG·Filed 1991·Granted Dec 28, 1993·11 cites·5 claims
- 3233US5276247AProcess for obtaining the hydrocarbon from a hydrocarbon-rich gelCASSELLA FARBWERKE MAINKUR AG·Filed 1992·Granted Jan 4, 1994·3 cites·16 claims
- 3332US5726331ADimethyl n-lauroyl-l-glutamateHOECHST AG·Filed 1996·Granted Mar 10, 1998·0 cites·4 claims
- 3431US5488123APolycondensates containing polysiloxane groupsCASSELLA AG·Filed 1995·Granted Jan 30, 1996·3 cites·15 claims
- 3530US5571764AAbsorbent for water and aqueous solutionsCASSELLA FARBWERKE MAINKUR AG·Filed 1996·Granted Nov 5, 1996·4 cites·16 claims
- 3630US5492995APolycondensates containing phosphinic or phosphonic acid groups and siloxane groupsHOECHST AG·Filed 1995·Granted Feb 20, 1996·2 cites·17 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →