Inventor
CENGEL JOHN A
14 patents
⚠️ This page may combine multiple inventors who share the name “CENGEL JOHN A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
STANDARD OIL CO INDIANA
9 patentsUS4379064AApr 5, 1983
Oxidative passivation of polyamine-dispersants
STANDARD OIL CO INDIANA100 citations92
US4464277AAug 7, 1984
Synthetic lubricant composition
STANDARD OIL CO INDIANA33 citations89
US4086251AApr 25, 1978
Process for manufacturing polyalkenyl succinic anhydrides
STANDARD OIL CO INDIANA27 citations81
US4029592AJun 14, 1977
Polybutene composition and use thereof
STANDARD OIL CO INDIANA7 citations73
US4455244AJun 19, 1984
Oxidized mannich condensation product
STANDARD OIL CO INDIANA11 citations71
US4514190AApr 30, 1985
Synthetic fuel composition
STANDARD OIL CO INDIANA17 citations70
US4008168AFeb 15, 1977
Polybutene composition containing halogen-containing additives and use thereof
STANDARD OIL CO INDIANA2 citations62
US4028264AJun 7, 1977
Polybutene composition containing halo-carbonyl additives and use thereof
STANDARD OIL CO INDIANA1 citations51
US3985672AOct 12, 1976
Polybutene composition containing brominated dialkylhydantoin additive and use thereof
STANDARD OIL CO INDIANA0 citations51
STANDARD OIL CO
4 patentsUS3935249AJan 27, 1976
Tar reduction by inorganic halide for reaction of unsaturated anhydride and polybutene
STANDARD OIL CO34 citations92
US3960900AJun 1, 1976
Polybutenylsuccinic anhydride production
STANDARD OIL CO12 citations73
US3954812AMay 4, 1976
Polybutene composition containing halogen-containing additives and use thereof
STANDARD OIL CO12 citations73
US3953475AApr 27, 1976
Polybutene composition containing halo-carbonyl additives
STANDARD OIL CO6 citations62