Inventor
WOLLENBERG ROBERT H
US57 patents
⚠️ This page may combine multiple inventors who share the name “WOLLENBERG ROBERT H”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CHEVRON RES
34 patentsUS4612132ASep 16, 1986
Modified succinimides
CHEVRON RES332 citations99
US4747965AMay 31, 1988
Modified succinimides
CHEVRON RES57 citations96
US4746446AMay 24, 1988
Modified succinimides
CHEVRON RES78 citations96
US4670170AJun 2, 1987
Modified succinimides (VIII)
CHEVRON RES89 citations96
US4668246AMay 26, 1987
Modified succinimides (IV)
CHEVRON RES114 citations96
US4666459AMay 19, 1987
Modified succinimides (VII)
CHEVRON RES107 citations96
US4666460AMay 19, 1987
Modified succinimides (III)
CHEVRON RES106 citations96
US4663062AMay 5, 1987
Lubricating oil compositions containing modified succinimides (VII)
CHEVRON RES105 citations96
US4648886AMar 10, 1987
Modified succinimides (V)
CHEVRON RES99 citations96
US4647390AMar 3, 1987
Lubricating oil compositions containing modified succinimides (V)
CHEVRON RES111 citations96
US4645515AFeb 24, 1987
Modified succinimides (II)
CHEVRON RES123 citations96
US4617138AOct 14, 1986
Modified succinimides (II)
CHEVRON RES115 citations96
US4614603ASep 30, 1986
Modified succinimides (III)
CHEVRON RES119 citations96
US4713188ADec 15, 1987
Carbonate treated hydrocarbyl-substituted amides
CHEVRON RES29 citations93
US4585566AApr 29, 1986
Carbonate treated dispersants
CHEVRON RES35 citations93
US4584117AApr 22, 1986
Dispersant additives for lubricating oils and fuels
CHEVRON RES36 citations93
US4450281AMay 22, 1984
Process for the preparation of a polyalkenyl succinic anhydride
CHEVRON RES27 citations93
US4388471AJun 14, 1983
Process for the preparation of alkenyl succinic anhydrides
CHEVRON RES32 citations93
US4927551AMay 22, 1990
Lubricating oil compositions containing a combination of a modified succinimide and a Group II metal overbased sulfurized alkylphenol
CHEVRON RES48 citations92
US4680129AJul 14, 1987
Modified succinimides (x)
CHEVRON RES28 citations92
US4624681ANov 25, 1986
Dispersant additives for lubricating oils and fuels
CHEVRON RES19 citations82
US4904278AFeb 27, 1990
Modified succinimides
CHEVRON RES12 citations74
US4803002AFeb 7, 1989
Carbonate treated dispersants
CHEVRON RES13 citations74
US4802893AFeb 7, 1989
Modified Succinimides
CHEVRON RES7 citations74
US4798612AJan 17, 1989
Modified succinimides (x)
CHEVRON RES7 citations74
US4755312AJul 5, 1988
Carbonate treated dispersants
CHEVRON RES6 citations74
US4747850AMay 31, 1988
Modified succinimides in fuel composition
CHEVRON RES11 citations74
US4746447AMay 24, 1988
Carbonate treated hydrocarbyl-substituted polyamines
CHEVRON RES7 citations74
US4702851AOct 27, 1987
Dispersant additives for lubricating oils and fuels
CHEVRON RES10 citations74
US4840744AJun 20, 1989
Modified succinimides and lubricating oil compositions containing the same
CHEVRON RES10 citations73
US4713187ADec 15, 1987
Lubricating oil compositions containing modified succinimides (V)
CHEVRON RES7 citations73
US4783275ANov 8, 1988
Modified succinimides (IV)
CHEVRON RES4 citations63
US4747963AMay 31, 1988
Lubricating oil compositions containing modified succinimides (VII)
CHEVRON RES5 citations63
US5071998ADec 10, 1991
Modified succinimides (III)
CHEVRON RES1 citations52
CHEVRON ORONITE CO
10 patentsUS7462490B2Dec 9, 2008
Combinatorial lubricating oil composition libraries
CHEVRON ORONITE CO7 citations72
US7985592B2Jul 26, 2011
High throughput screening methods for lubricating oil compositions
CHEVRON ORONITE CO4 citations63
US7380441B2Jun 3, 2008
High throughput screening methods for lubricating oil compositions
CHEVRON ORONITE CO2 citations63
US7698929B2Apr 20, 2010
High throughput screening methods for lubricating oil compositions
CHEVRON ORONITE CO5 citations61
US7468280B2Dec 23, 2008
High throughput preparation of lubricating oil compositions for combinatorial libraries
CHEVRON ORONITE CO2 citations61
US7150182B2Dec 19, 2006
High throughput screening methods for lubricating oil compositions
CHEVRON ORONITE CO4 citations61
US7069203B2Jun 27, 2006
Method and system of product development process for chemical compositions using high volume modeling
CHEVRON ORONITE CO3 citations61
US7611900B2Nov 3, 2009
High throughput screening methods for lubricating oil compositions
CHEVRON ORONITE CO0 citations52
US7306948B2Dec 11, 2007
High throughput screening methods for lubricating oil compositions
CHEVRON ORONITE CO1 citations52
US7137289B2Nov 21, 2006
High throughput screening methods for lubricating oil compositions
CHEVRON ORONITE CO0 citations52
ANALYTICAL RADIATION CORP
2 patentsCHEVRON RES & TECH
2 patentsUS5330663AJul 19, 1994
Neutral and low overbased alkylphenoxy sulfonate additive compositions
CHEVRON RES & TECH6 citations71
US5330664AJul 19, 1994
Neutral and low overbased alkylphenoxy sulfonate additive compositions derived from alkylphenols prepared by reacting an olefin or an alcohol with phenol in the presence of an acidic alkylation catalyst
CHEVRON RES & TECH5 citations60
WIEDER IRWIN
1 patentCHEVRON CHEM CO
1 patentShowing the top 50 of 57 patents by PatentIndex Score.