Inventor · disambiguated record
John A. Cengel
Also filed as: CENGEL JOHN A
14 granted patents·279 citations·filing 1973–1984
93Inventor score
Top patents by PatentIndex Score
14 records- 0195US3935249ATar reduction by inorganic halide for reaction of unsaturated anhydride and polybuteneSTANDARD OIL CO·Filed 1973·Granted Jan 27, 1976·34 cites·3 claims
- 0293US4379064AOxidative passivation of polyamine-dispersantsSTANDARD OIL CO INDIANA·Filed 1981·Granted Apr 5, 1983·100 cites·11 claims
- 0391US4086251AProcess for manufacturing polyalkenyl succinic anhydridesSTANDARD OIL CO INDIANA·Filed 1976·Granted Apr 25, 1978·27 cites·9 claims
- 0485US4464277ASynthetic lubricant compositionSTANDARD OIL CO INDIANA·Filed 1982·Granted Aug 7, 1984·33 cites·8 claims
- 0571US4940552APassivation of polyamine dispersants toward fluorohydrocarbon compositionsAMOCO CORP·Filed 1982·Granted Jul 10, 1990·17 cites·7 claims
- 0669US4029592APolybutene composition and use thereofSTANDARD OIL CO INDIANA·Filed 1975·Granted Jun 14, 1977·7 cites·7 claims
- 0769US3960900APolybutenylsuccinic anhydride productionSTANDARD OIL CO·Filed 1973·Granted Jun 1, 1976·12 cites·4 claims
- 0869US3954812APolybutene composition containing halogen-containing additives and use thereofSTANDARD OIL CO·Filed 1973·Granted May 4, 1976·12 cites·3 claims
- 0965US4514190ASynthetic fuel compositionSTANDARD OIL CO INDIANA·Filed 1984·Granted Apr 30, 1985·17 cites·4 claims
- 1065US3953475APolybutene composition containing halo-carbonyl additivesSTANDARD OIL CO·Filed 1973·Granted Apr 27, 1976·6 cites·4 claims
- 1155US4455244AOxidized mannich condensation productSTANDARD OIL CO INDIANA·Filed 1982·Granted Jun 19, 1984·11 cites·10 claims
- 1251US4008168APolybutene composition containing halogen-containing additives and use thereofSTANDARD OIL CO INDIANA·Filed 1975·Granted Feb 15, 1977·2 cites·9 claims
- 1332US4028264APolybutene composition containing halo-carbonyl additives and use thereofSTANDARD OIL CO INDIANA·Filed 1975·Granted Jun 7, 1977·1 cites·4 claims
- 1430US3985672APolybutene composition containing brominated dialkylhydantoin additive and use thereofSTANDARD OIL CO INDIANA·Filed 1975·Granted Oct 12, 1976·0 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →