Inventor

ZUMSTEIN RONALD C

US3 patents

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

ETHYL CORP

2 patents

US4923954AMay 8, 1990

Production of particulate polyimide polymers

ETHYL CORP21 citations79

US4943682AJul 24, 1990

Production of particulate polyimide polymers

ETHYL CORP3 citations60

ALBEMARLE CORP

1 patent

US5847202ADec 8, 1998

Racemization process for optically active carboxylic acids or salts or esters thereof

ALBEMARLE CORP1 citations48