Inventor
PROKSCHY FRANK
DE7 patents
⚠️ This page may combine multiple inventors who share the name “PROKSCHY FRANK”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HOECHST AG
6 patentsUS4986852AJan 22, 1991
Pigments and use thereof
HOECHST AG31 citations90
US4881980ANov 21, 1989
Pigments of the quinacridonequinone series, processes for their preparation and their use
HOECHST AG10 citations72
US5055580AOct 8, 1991
Substituted polycylic derivatives of the 9-oxo-1,9a,10-triaza-9-hydroanthracene and method for coloring of native or synthetic materials
HOECHST AG2 citations61
US4758664AJul 19, 1988
Process for the preparation of linear quinacridones
HOECHST AG6 citations61
US4693753ASep 15, 1987
Pigments of the quinacridonequinone series, process for their preparation and their use
HOECHST AG3 citations61
US4937345AJun 26, 1990
Process for the preparation of 2-(arylamino)-3-carboxy-9(10H)-acridones
HOECHST AG1 citations50