Inventor
FICKEN GEOFFREY E
GB5 patents
⚠️ This page may combine multiple inventors who share the name “FICKEN GEOFFREY E”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CIBA GEIGY AG
4 patentsUS4138551AFeb 6, 1979
Spectral sensitization of photographic material and new spectral sensitizers
CIBA GEIGY AG33 citations88
US4728601AMar 1, 1988
Tetra-aza indene compounds
CIBA GEIGY AG13 citations68
US4804599AFeb 14, 1989
Optical sensitizing dyes
CIBA GEIGY AG2 citations59
US4287348ASep 1, 1981
Preparation of sulphoalkyl quaternary salts
CIBA GEIGY AG2 citations57