Inventor
ZENGEL HANS G
DE7 patents
⚠️ This page may combine multiple inventors who share the name “ZENGEL HANS G”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
AKZONA INC
5 patentsUS4404401ASep 13, 1983
Process for the preparation of para-amino-diphenylamine
AKZONA INC23 citations81
US4468526AAug 28, 1984
Process for the preparation of thiuram disulfides
AKZONA INC16 citations73
US4459424AJul 10, 1984
Process for the preparation of thiuram disulfides
AKZONA INC17 citations73
US4210602AJul 1, 1980
Process for the preparation of asymmetrical N-phenyl-N'-substituted para-phenylene diamines
AKZONA INC14 citations73
US4346233AAug 24, 1982
Process for the preparation of ureas
AKZONA INC2 citations58