Inventor

THOMKA DONALD E

US3 patents

⚠️ This page may combine multiple inventors who share the name “THOMKA DONALD E”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

AMOCO CORP

2 patents

US4876385AOct 24, 1989

Batch or semicontinuous pseudocumene oxidation and catalyst recovery and recycle

AMOCO CORP5 citations59

US4769488ASep 6, 1988

Batch or semicontinuous pseudocumene oxidation and catalyst recovery and recycle

AMOCO CORP5 citations59

STANDARD OIL CO INDIANA

1 patent

US4260546AApr 7, 1981

Aged molten color of maleic anhydride

STANDARD OIL CO INDIANA8 citations70