Inventor
MEISEL KARLHEINRICH
DE12 patents
⚠️ This page may combine multiple inventors who share the name “MEISEL KARLHEINRICH”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BAYER AG
10 patentsUS5130442AJul 14, 1992
Chromogenic enamine compounds, their preparation and use as color formers
BAYER AG36 citations92
US4754034AJun 28, 1988
Chromogenic 4,4-diaryldihydroquinazolones
BAYER AG7 citations73
US4600776AJul 15, 1986
Cationic enamine dyestuff indolylmethine derivatives
BAYER AG11 citations73
US6576687B1Jun 10, 2003
Wet-strength agent with low DCP content
BAYER AG7 citations72
US5725607AMar 10, 1998
Method for reducing the toxicity of spent liquors and novel cationic dyes
BAYER AG6 citations69
US4968797ANov 6, 1990
Chromogenic 4,4-diaryldihydroquinazolones
BAYER AG2 citations62
US4727140AFeb 23, 1988
Chromogenic 4,4-diaryl-2-oxobenzo-3,1-oxazines
BAYER AG6 citations62
US5179211AJan 12, 1993
Process for the preparation of indoles
BAYER AG2 citations56
US6989106B2Jan 24, 2006
Process for the preparation of polymeric condensates and their use
BAYER AG0 citations48
US5840902ANov 24, 1998
Process for the preparation of beta-hydroxyalkypicolinium salts
BAYER AG0 citations38