Inventor · disambiguated record
Karl-Erwin Piejko
Also filed as: PIEJKO KARL-ERWIN
72 granted patents·739 citations·filing 1985–2000
99Inventor score
Top patents by PatentIndex Score
72 records- 0194US4780411AWater-absorbing, essentially water-free membrane for reagent substrates and methods of preparing the sameBAYER AG·Filed 1985·Granted Oct 25, 1988·77 cites·12 claims
- 0284US5420181AComposition of polycarbonate, ABS, a basic additive and a carboxylic and compoundBAYER AG·Filed 1994·Granted May 30, 1995·38 cites·13 claims
- 0378US4914159AOptically active (meth)acrylamides, a process for their preparation, and their use for racemate resolutionBAYER AG·Filed 1988·Granted Apr 3, 1990·28 cites·8 claims
- 0473US5173547ACopolymers containing perfluoroalkylsBAYER AG·Filed 1990·Granted Dec 22, 1992·28 cites·8 claims
- 0571US5237001AThermoplastic compositions of polyurethanes and partly crosslinked alkyl acrylate copolymersBAYER AG·Filed 1991·Granted Aug 17, 1993·21 cites·5 claims
- 0671US5214115AUncrosslinked copolymers containing reactive double bonds of fluorine monomers and unconjugated dienes and a process for their productionBAYER AG·Filed 1992·Granted May 25, 1993·21 cites·6 claims
- 0771US4902746AUse of mixtures of polycarbonates and styrene polymers as substrates for optical storage mediaBAYER AG·Filed 1988·Granted Feb 20, 1990·17 cites·6 claims
- 0870US5122571AMoulding compounds of polyamides and graft polymers containing tert.-butylacrylateBAYER AG·Filed 1989·Granted Jun 16, 1992·20 cites·7 claims
- 0969US4937000AOptically active (meth)acrylamides, a process for their preparation, and their use for racemate resolutionBAYER AG·Filed 1989·Granted Jun 26, 1990·19 cites·10 claims
- 1068US6503628B1Thermoplastic polycarbonate molding composition containing a rubber free copolymer and a combination of graft polymersBAYER AG·Filed 2000·Granted Jan 7, 2003·15 cites·7 claims
- 1167US4985486AReinforced/filled blends of thermoplastic interpolymers and polyamides and a process for their productionBAYER AG·Filed 1989·Granted Jan 15, 1991·19 cites·16 claims
- 1264US5674940AABS molding compounds with improved toughnessBAYER AG·Filed 1996·Granted Oct 7, 1997·21 cites·3 claims
- 1364US5605963AABS polymer compositions having a uniform matt surfaceBAYER AG·Filed 1995·Granted Feb 25, 1997·22 cites·3 claims
- 1464US5075380ASoft, thermo-plastically processible polymer alloys containing polyamideBAYER AG·Filed 1990·Granted Dec 24, 1991·19 cites·7 claims
- 1561US5298546AThermoplastic molding compounds of polyalkylene terephthalate, special barium sulfate, particulate graft polymers and, optionally, reinforcing materialsBAYER AG·Filed 1990·Granted Mar 29, 1994·12 cites·4 claims
- 1661US5219643AMultilayered filmsBAYER AG·Filed 1991·Granted Jun 15, 1993·19 cites·3 claims
- 1760US5741853AABS moulding compositions with improved propertiesBAYER AG·Filed 1996·Granted Apr 21, 1998·18 cites·13 claims
- 1860US5426165AThermoplastic fluorocopolymers and the fluoromonomers used for their preparationBAYER AG·Filed 1992·Granted Jun 20, 1995·12 cites·2 claims
- 1957US4902745ARubber-like thermoplastic polymer mixturesBAYER AG·Filed 1988·Granted Feb 20, 1990·13 cites·1 claims
- 2056US5296528ACompatible polymer blends with thermoplastic polycarbonatesBAYER AG·Filed 1992·Granted Mar 22, 1994·13 cites·7 claims
- 2156US5247036ANon-crosslinked polymers, containing reactive double bonds, of fluorinated monomers and alkenyl (iso)-cyanuratesBAYER AG·Filed 1991·Granted Sep 21, 1993·11 cites·13 claims
- 2256US5010138AThermoplastic interpolymers and their use in mixtures of polyamide and styrene copolymers and/or graft polymersBAYER AG·Filed 1989·Granted Apr 23, 1991·12 cites·10 claims
- 2355US5250621AInterpolymers of aromatic polyesters and rubbersBAYER AG·Filed 1991·Granted Oct 5, 1993·9 cites·7 claims
- 2455US5238977AGraft polymer dispersionsBAYER AG·Filed 1992·Granted Aug 24, 1993·16 cites·8 claims
- 2555US4879367AProcess for the preparation of aliphatic polycarbonates with alkoxy silane initiatorBAYER AG·Filed 1988·Granted Nov 7, 1989·9 cites·10 claims
- 2654US5250617APolymer blends containing ethylene polymers for flexible filmsBAYER AG·Filed 1992·Granted Oct 5, 1993·13 cites·2 claims
- 2754US5047473AFlexible polymer mixturesBAYER AG·Filed 1988·Granted Sep 10, 1991·9 cites·4 claims
- 2853US5104935APolymer mixtureBAYER AG·Filed 1989·Granted Apr 14, 1992·11 cites·4 claims
- 2953US5041485AStabilizer dispersionsBAYER AG·Filed 1990·Granted Aug 20, 1991·8 cites·3 claims
- 3052US5112910AMixtures of thermoplastic polymers in powder formBAYER AG·Filed 1991·Granted May 12, 1992·11 cites·10 claims
- 3152US4931525AOptical active (meth)acrylamides and polymers thereof for racemate resolutionBAYER AG·Filed 1988·Granted Jun 5, 1990·8 cites·11 claims
- 3251US4902744APolymer mixture and its use as a modifier for polyvinyl chlorideBAYER AG·Filed 1988·Granted Feb 20, 1990·10 cites·5 claims
- 3350US5773630AProcess for the preparation of N-substituted cyclic imidesBAYER AG·Filed 1996·Granted Jun 30, 1998·4 cites·11 claims
- 3450US5708079AThermoplastic ABS moulding compositionsBAYER AG·Filed 1996·Granted Jan 13, 1998·12 cites·6 claims
- 3550US5696204AThermoplastic moulding compositions of the ABS typeBAYER AG·Filed 1996·Granted Dec 9, 1997·12 cites·4 claims
- 3650US5587424AMixture of fluorocarbon rubber and silicone/acrylate core/shell rubberBAYER AG·Filed 1995·Granted Dec 24, 1996·15 cites·7 claims
- 3750US5456861AAbietic acid derivatives and their use as emulsifiersBAYER AG·Filed 1990·Granted Oct 10, 1995·4 cites·6 claims
- 3850US5219934APolymers containing sulfonamide units as compatibilizers for polyamide/polycarbonate blendsBAYER AG·Filed 1992·Granted Jun 15, 1993·10 cites·18 claims
- 3946US5714541AThermoplastics having a high heat deflection temperature and improved heat stabilityBAYER AG·Filed 1996·Granted Feb 3, 1998·6 cites·6 claims
- 4046US5599862AGraft polymers with improved surface glossFiled 1995·Granted Feb 4, 1997·10 cites·4 claims
- 4146US5266642AProcess for the preparation of alpha-methylstyrene polymersBAYER AG·Filed 1992·Granted Nov 30, 1993·6 cites·12 claims
- 4245US5096966APolymer mixture for flexible sheetsBAYER AG·Filed 1990·Granted Mar 17, 1992·8 cites·2 claims
- 4344US5039747AMixtures of thermoplastic polymers in powder formBAYER AG·Filed 1989·Granted Aug 13, 1991·7 cites·3 claims
- 4443US5194497AAlloys of thermoplastic polymers containing oxetanyl groupsBAYER AG·Filed 1991·Granted Mar 16, 1993·5 cites·3 claims
- 4541US5726265AThermoplastics having a high heat deflection temperature and improved heat stabilityBAYER AG·Filed 1996·Granted Mar 10, 1998·4 cites·2 claims
- 4641US4945124AImpact resistant polyamide moulding compounds modified with silicone graft rubbersBAYER AG·Filed 1989·Granted Jul 31, 1990·6 cites·13 claims
- 4739US5227441APreparation of fluoropolymers containing masked phenol groupsBAYER AG·Filed 1992·Granted Jul 13, 1993·4 cites·5 claims
- 4839US4923923APowder compositions based on polyarylene sulphidesSTRUSS KLAUS·Filed 1988·Granted May 8, 1990·9 cites·7 claims
- 4938US5026803ACrosslinked triazine polymers and their use as crosslinking agentsBAYER AG·Filed 1990·Granted Jun 25, 1991·3 cites·2 claims
- 5037US5344876AMolding compounds having improved fire behaviorBAYER AG·Filed 1992·Granted Sep 6, 1994·4 cites·6 claims
Showing the top 50 of 72 patent records by PatentIndex Score.
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