Inventor
KALETTA BERND
DE11 patents
⚠️ This page may combine multiple inventors who share the name “KALETTA BERND”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BAYER AG
6 patentsUS5367069ANov 22, 1994
Metal-free, substituted phthalocyanines in the χ-modification
BAYER AG10 citations73
US5091532AFeb 25, 1992
Process for the preparation of pigments based on isoindole
BAYER AG12 citations73
US5386051AJan 31, 1995
Process for the preparation of 1,2,3-tricyanobenzene, phthalocyanines which are obtainable from 1,2,3-tricyanobenzene, and their use as pigments
BAYER AG2 citations62
US5194626AMar 16, 1993
Metal complex pigments of azines
BAYER AG3 citations62
US5525152AJun 11, 1996
Pigment salts and their use for dyeing and pigmenting
BAYER AG5 citations57
US5162518ANov 10, 1992
Heterocyclic compounds and porphyrin compounds obtainable therefrom
BAYER AG0 citations37
AGFA GEVAERT NV
3 patentsUS5721080AFeb 24, 1998
Electrophotographic material containing particular phthalocyanines
AGFA GEVAERT NV64 citations95
US6174635B1Jan 16, 2001
Electrophotographic recording material containing metal-free phthalocyanines
AGFA GEVAERT NV9 citations73
US5134048AJul 28, 1992
Electrophotographic recording material containing photoconductive porphyrin compounds
AGFA GEVAERT NV12 citations73