Inventor · disambiguated record
Claus Wulff
Also filed as: WULFF CLAUS · WULFF CLAUS DR · WULFF CLAUS H · WULFF CLAUS H DR
50 granted patents·1,500 citations·filing 1975–1997
99Inventor score
Top patents by PatentIndex Score
50 records- 0198US4982014ADihydroxydiphenyl cycloalkanes, their production and their use for the production of high molecular weight polycarbonatesBAYER AG·Filed 1989·Granted Jan 1, 1991·503 cites·5 claims
- 0295US5126428APolycarbonate from dihydroxy diphenyl cycloalkaneBAYER AG·Filed 1990·Granted Jun 30, 1992·108 cites·9 claims
- 0394US4016190AProcess for the preparation of diarylcarbonatesBAYER AG·Filed 1976·Granted Apr 5, 1977·36 cites·13 claims
- 0491US5302774AProcess for the production of bisphenolsBAYER AG·Filed 1993·Granted Apr 12, 1994·39 cites·1 claims
- 0590US5235026AContinuous production of polycarbonatesBAYER AG·Filed 1992·Granted Aug 10, 1993·53 cites·2 claims
- 0690US5227458APolycarbonate from dihydroxydiphenyl cycloalkaneBAYER AG·Filed 1992·Granted Jul 13, 1993·65 cites·3 claims
- 0790US5015784AIsomerization of bisphenolsBAYER AG·Filed 1989·Granted May 14, 1991·26 cites·3 claims
- 0889US5284981AIon exchangers modified with mercapto aminesBAYER AG·Filed 1990·Granted Feb 8, 1994·36 cites·3 claims
- 0986US5780690ABisphenol synthesis on modified ion-exchange resins using specially purified carbonyl compoundsBAYER AG·Filed 1997·Granted Jul 14, 1998·32 cites·5 claims
- 1086US5395857AOptimized ion exchanger beds for the synthesis of bisphenol ABAYER AG·Filed 1994·Granted Mar 7, 1995·59 cites·2 claims
- 1182US5785823AProcess for the purification of bisphenolBAYER AG·Filed 1996·Granted Jul 28, 1998·32 cites·2 claims
- 1282US5698600AProcess for the production of bisphenols with the use of new cocatalystsBAYER AG·Filed 1996·Granted Dec 16, 1997·38 cites·3 claims
- 1382US5212206AIon exchange modified with mercapto aminesBAYER AG·Filed 1990·Granted May 18, 1993·41 cites·4 claims
- 1481US5696295AMethod for the preparation of ultra-pure bisphenol A and the use thereofBAYER AG·Filed 1995·Granted Dec 9, 1997·29 cites·2 claims
- 1580US5684087AProcess for producing thermoplastic granulated polymer material from polymer solutionsBAYER AG·Filed 1996·Granted Nov 4, 1997·40 cites·15 claims
- 1680US4912263AIonic exchangers modified with thiazolinesBAYER AG·Filed 1988·Granted Mar 27, 1990·17 cites·4 claims
- 1780US4369293ACatalyst for the preparation of bisphenolsBAYER AG·Filed 1981·Granted Jan 18, 1983·37 cites·1 claims
- 1879US5300700AProcess for the production of high-purity bisphenol ABAYER AG·Filed 1993·Granted Apr 5, 1994·18 cites·8 claims
- 1976US5545764AProcess for the continuous production of high purity bisphenol ABAYER AG·Filed 1995·Granted Aug 13, 1996·20 cites·2 claims
- 2075US5210328AProcess for the preparation of substituted cycloalkylidene bisphenolsBAYER AG·Filed 1992·Granted May 11, 1993·14 cites·2 claims
- 2173US5627256APolycarbonates containing aryl phosphinesBAYER AG·Filed 1995·Granted May 6, 1997·26 cites·20 claims
- 2268US4098754AProcess for the preparation of high molecular thermoplastic polycarbonates of low flammabilityBAYER AG·Filed 1975·Granted Jul 4, 1978·15 cites·14 claims
- 2367US5317083AProcess for isolating polycarbonates from their solutions with tube having cross sectional contrictionsBAYER AG·Filed 1993·Granted May 31, 1994·14 cites·6 claims
- 2467US4267127AProcess for the production of phosphoric acid triestersBAYER AG·Filed 1979·Granted May 12, 1981·6 cites·9 claims
- 2565US4990595AProcess for lowering the melt viscosity of aromatic polycarbonates, aromatic polyester carbonates and aromatic and/or araliphatic polyesters with super-critical gasesBAYER AG·Filed 1989·Granted Feb 5, 1991·26 cites·4 claims
- 2662US5786445AProcess for drying polymeric powders and polymeric agglomeratesBAYER AG·Filed 1996·Granted Jul 28, 1998·22 cites·10 claims
- 2762US5412060AProcess for the production of polycarbonate of constant viscosityBAYER AG·Filed 1994·Granted May 2, 1995·13 cites·9 claims
- 2861US5703204AMethod for reprocessing aqueous extract solutions obtained in the production of PA 6 or copolyamideBAYER AG·Filed 1996·Granted Dec 30, 1997·16 cites·10 claims
- 2960US5959160APurification of p,p-bisphenolate solutionsBAYER AG·Filed 1997·Granted Sep 28, 1999·8 cites·4 claims
- 3058US4600753ATwo stage process for the production of aromatic polyester-carbonateBAYER AG·Filed 1984·Granted Jul 15, 1986·12 cites·7 claims
- 3157US5921089AMethod for the transport and storage of phenolPHENOLCHEMIE GMBH & CO KG·Filed 1997·Granted Jul 13, 1999·6 cites·11 claims
- 3256US5652313ATwo-stage process for the manufacture of thermoplastic polycarbonateBAYER AG·Filed 1996·Granted Jul 29, 1997·13 cites·4 claims
- 3355US5455282AProcess of regenerating sulfonic acid cation exchange resins with a mercaptoethylamine or thiazolidineBAYER AG·Filed 1995·Granted Oct 3, 1995·19 cites·3 claims
- 3454US5756860ACrystalline adduct of bisphenol A and bisphenol TMCBAYER AG·Filed 1996·Granted May 26, 1998·5 cites·2 claims
- 3551US4614763AMolding compounds of thermoplastic polyamide and graft rubberBAYER AG·Filed 1985·Granted Sep 30, 1986·10 cites·18 claims
- 3650US5456861AAbietic acid derivatives and their use as emulsifiersBAYER AG·Filed 1990·Granted Oct 10, 1995·4 cites·6 claims
- 3748US4290977AProcess for the production of neutral phosphoric acid estersBAYER AG·Filed 1979·Granted Sep 22, 1981·2 cites·9 claims
- 3846US5260418AWashing of polycarbonates with cascading train of centrifugesBAYER AG·Filed 1992·Granted Nov 9, 1993·6 cites·6 claims
- 3946US4393009AProcess for the preparation of aromatic dicarboxylic acid dichloridesBAYER AG·Filed 1981·Granted Jul 12, 1983·7 cites·2 claims
- 4046US4346210AProcess for the preparation of polycarbonates catalyzed by cyclic aza compoundsBAYER AG·Filed 1979·Granted Aug 24, 1982·5 cites·5 claims
- 4143US4356129AProcess for the preparation of neutral phosphorous acid aryl estersBAYER AG·Filed 1980·Granted Oct 26, 1982·5 cites·10 claims
- 4241US5300550AThermoplastic molding compositionsBAYER AG·Filed 1993·Granted Apr 5, 1994·4 cites·11 claims
- 4339USRE34626EIsomerization of bisphenolsBAYER AG·Filed 1993·Granted May 31, 1994·1 cites·3 claims
- 4437US4960864AProcess for recovering thermoplastic polymers from dispersionBAYER AG·Filed 1989·Granted Oct 2, 1990·2 cites·7 claims
- 4534US5981644AMethod of producing ABS moulding compositionsBAYER AG·Filed 1997·Granted Nov 9, 1999·2 cites·8 claims
- 4634US5275758AProduction of ultrafine suspensions of bisphenol, sodium hydroxide and waterBAYER AG·Filed 1992·Granted Jan 4, 1994·5 cites·1 claims
- 4733US5115050APolyamide moulding compositions containing finely divided polyarylene sulphidesBAYER AG·Filed 1990·Granted May 19, 1992·2 cites·5 claims
- 4831US5726228AUse of carbonates as demoulding agents for thermoplastic polycarbonatesBAYER AG·Filed 1996·Granted Mar 10, 1998·1 cites·8 claims
- 4930US5235035AProcess for lowering the crystallization temperature of polyarylene sulphidesBAYER AG·Filed 1990·Granted Aug 10, 1993·0 cites·5 claims
- 5029US5830977AProcess for the isolation of partially crystalline polycarbonate powderBAYER AG·Filed 1997·Granted Nov 3, 1998·0 cites·17 claims
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