Inventor · disambiguated record
Steven P. Diefenbach
Also filed as: DIEFENBACH STEVEN P
39 granted patents·3 pending applications·458 citations·filing 1981–2019
98Inventor score
Top patents by PatentIndex Score
42 records- 0198US7355058B2Haloaluminoxane compositions, their preparation, and their use in catalysisALBEMARLE CORP·Filed 2006·Granted Apr 8, 2008·59 cites·26 claims
- 0296US8575284B2Aluminoxane catalyst activators derived from dialkylaluminum cation precursor agents, processes for making same, and use thereof in catalysts and polymerization of olefinsLUO LUBIN·Filed 2012·Granted Nov 5, 2013·54 cites·10 claims
- 0392US9090720B2Aluminoxane catalyst activators containing carbocation agents, and use thereof in polyolefin catalystsLUO LUBIN·Filed 2012·Granted Jul 28, 2015·14 cites·18 claims
- 0490US8354485B2Aluminoxane catalyst activators derived from dialkylaluminum cation precursor agents, processes for making same, and use thereof in catalysts and polymerization of olefinsALBEMARLE CORP·Filed 2008·Granted Jan 15, 2013·13 cites·31 claims
- 0588US6294496B1Particulate group 4 metallocene-aluminoxane catalyst compositions devoid of preformed support, and their preparation and their useALBEMARLE CORP·Filed 2000·Granted Sep 25, 2001·23 cites·22 claims
- 0687US4918254ANickel catalyzed displacement reactionETHYL CORP·Filed 1989·Granted Apr 17, 1990·24 cites·20 claims
- 0783US7960488B2Aluminoxane compositions, their preparation, and their use in catalysisALBEMARLE CORP·Filed 2007·Granted Jun 14, 2011·6 cites·19 claims
- 0883US7928172B2Catalyst activators, processes for making same, and use thereof in catalysts and polymerization of olefinsALBEMARLE CORP·Filed 2007·Granted Apr 19, 2011·8 cites·22 claims
- 0983US5302733APreparation of metallocenesETHYL CORP·Filed 1992·Granted Apr 12, 1994·26 cites·13 claims
- 1081US5124465AAluminum alkyls and linear 1-olefins from internal olefinsETHYL CORP·Filed 1991·Granted Jun 23, 1992·20 cites·32 claims
- 1180US5739368AUse of heat treated alumoxanes in preparing supported catalystsALBEMARLE CORP·Filed 1996·Granted Apr 14, 1998·38 cites·19 claims
- 1279US7897707B2Catalyst activators, processes for making same, and use thereof in catalysts and polymerization of olefinsALBEMARLE CORP·Filed 2007·Granted Mar 1, 2011·4 cites·17 claims
- 1377US6248265B1Clean generation of a fluoroaryl grignard reagentALBEMARLE CORP·Filed 2000·Granted Jun 19, 2001·9 cites·30 claims
- 1476US4364872AMethod of making aluminum alkylsETHYL CORP·Filed 1981·Granted Dec 21, 1982·10 cites·22 claims
- 1575US6551955B1Particulate group 4 metallocene-aluminoxane catalyst compositions devoid of preformed support, and their preparation and their useALBEMARLE CORP·Filed 2000·Granted Apr 22, 2003·11 cites·19 claims
- 1674US5693261APreparation of pentafluorophenyl compoundsALBEMARLE CORP·Filed 1995·Granted Dec 2, 1997·22 cites·15 claims
- 1774US5600004AProcess for preparing pentafluorophenyl compoundsALBEMARLE CORP·Filed 1995·Granted Feb 4, 1997·17 cites·10 claims
- 1874US4364873AMethod of making aluminum alkylsETHYL CORP·Filed 1981·Granted Dec 21, 1982·9 cites·27 claims
- 1972US7902390B2Catalyst activators, processes for making same, and use thereof in catalysts and polymerization of olefinsALBEMARLE CORP·Filed 2007·Granted Mar 8, 2011·2 cites·21 claims
- 2070US6129863AClean generation of a perfluoroaryl grignard reagentALBEMARLE CORP·Filed 1998·Granted Oct 10, 2000·13 cites·52 claims
- 2170US5200537AProcess for preparing metallocenesETHYL CORP·Filed 1992·Granted Apr 6, 1993·13 cites·12 claims
- 2269US8088952B2Ionic bronsted acidLUO LUBIN·Filed 2007·Granted Jan 3, 2012·1 cites·3 claims
- 2367US8501655B2Catalyst activators, processes for making same, and use thereof in catalysts and polymerization of olefinsLUO LUBIN·Filed 2007·Granted Aug 6, 2013·1 cites·21 claims
- 2467US7193100B2Haloaluminoxane compositions, their preparation, and their use in catalysisALBEMARLE CORP·Filed 2003·Granted Mar 20, 2007·6 cites·32 claims
- 2566US2019153135A1Activator Compositions, Their Preparation, And Their Use In CatalystsGRACE W R & CO·Filed 2019·Application pending·0 cites
- 2662US6034024AHeat treated alumoxanesALBEMARLE CORP·Filed 1998·Granted Mar 7, 2000·17 cites·20 claims
- 2761US4364874AMethod of making aluminum alkylsETHYL CORP·Filed 1981·Granted Dec 21, 1982·5 cites·20 claims
- 2860US10221264B2Activator compositions, their preparation, and their use in catalystsGRACE W R & CO·Filed 2013·Granted Mar 5, 2019·0 cites·11 claims
- 2954US5144053AAluminum alkyls and linear 1-olefins from internal olefinsETHYL CORP·Filed 1991·Granted Sep 1, 1992·5 cites·12 claims
- 3051US6521728B1Particulate group 4 metallocene-aluminoxane catalyst compositions devoid of preformed support, and their preparation and their useALBEMARLE CORP·Filed 2000·Granted Feb 18, 2003·7 cites·32 claims
- 3150US6677265B1Process of producing self-supported catalystsALBEMARLE CORP·Filed 2000·Granted Jan 13, 2004·2 cites·54 claims
- 3250US4698451ADirhenium metathesis catalystsETHYL CORP·Filed 1986·Granted Oct 6, 1987·3 cites·34 claims
- 3349US5959151AProcess for the purification of pentafluorophenyl boron compoundsALBEMARLE CORP·Filed 1998·Granted Sep 28, 1999·4 cites·42 claims
- 3447US2010010181A1Catalyst Activators, Processes For Making Same, And Use Thereof In Catalysts And Polymerization Of OlefinsALBEMARLE CORP·Filed 2007·Application pending·0 cites
- 3546US6746981B2Particulate group 4 metallocene-aluminoxane catalyst compositions devoid of preformed support, and their preparation and their useALBEMARLE CORP·Filed 2002·Granted Jun 8, 2004·0 cites·37 claims
- 3645US6730758B2Particulate group 4 metallocene-aluminoxane catalyst compositions devoid of preformed support, and their preparation and their useALBEMARLE CORP·Filed 2003·Granted May 4, 2004·0 cites·16 claims
- 3744US2008300372A1Catalyst Activators, Processes for Making Same, and Use Thereof in Catalysts and Polymerization of OlefinsLUO LUBIN·Filed 2006·Application pending·0 cites
- 3840US5856255APreparation of supported auxiliary catalysts at elevated temperature and pressure in a closed vesselALBEMARLE CORP·Filed 1996·Granted Jan 5, 1999·5 cites·11 claims
- 3939US5648308AProcess for upgrading metallocene catalystsALBEMARLE CORP·Filed 1995·Granted Jul 15, 1997·4 cites·9 claims
- 4036US5003100AMethod of producing polysilane compoundsETHYL CORP·Filed 1990·Granted Mar 26, 1991·1 cites·19 claims
- 4133US4704377AMetathesis of acetylenesETHYL CORP·Filed 1986·Granted Nov 3, 1987·2 cites·33 claims
- 4230US4754097AMetathesis of acetylenesETHYL CORP·Filed 1987·Granted Jun 28, 1988·0 cites·16 claims
Join the waitlist — get patent alerts
Get an alert when Steven P. Diefenbach files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →