Inventor
PFENNINGER HEINZ
CH11 patents
⚠️ This page may combine multiple inventors who share the name “PFENNINGER HEINZ”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CIBA GEIGY CORP
7 patentsUS4466900AAug 21, 1984
Process for the preparation of fluorescent brightener formulations which are stable on storage
CIBA GEIGY CORP37 citations86
US4500321AFeb 19, 1985
Process for the preparation of concentrated fluid dye compositions
CIBA GEIGY CORP26 citations81
US4390342AJun 28, 1983
Process for the preparation of solid composition of water-soluble dyes
CIBA GEIGY CORP27 citations81
US4758347AJul 19, 1988
Process for purifying dyeing wastewaters
CIBA GEIGY CORP23 citations75
US4889633ADec 26, 1989
Process for treating aqueous fluids containing organic compounds and salts of polyvalent inorganic acids
CIBA GEIGY CORP10 citations73
US4559144ADec 17, 1985
Process for converting sparingly soluble inorganic salts of cationic dyes and brighteners into more soluble salts of organic acids
CIBA GEIGY CORP7 citations73
US4810390AMar 7, 1989
Separation and purification of pigment suspensions and suspensions of pigment intermediates by a membrane separation process
CIBA GEIGY CORP12 citations67