Inventor
WESTERHAUS AXEL
DE3 patents
Patents
3 patentsUS4966641AOct 30, 1990
Color intensive iron oxide black pigments obtained by the nitrobenzene reduction process and a process for its preparation
BAYER AG19 citations79
US5049193ASep 17, 1991
Heat stable iron oxide pigments of upsilon-Fe2 O3 structure, a process for their production and their use
BAYER AG7 citations71
US4990189AFeb 5, 1991
Iron oxide pigments, a process for their preparation and their use
BAYER AG13 citations70