Inventor
RINGSDORF HELMUT
DE18 patents
⚠️ This page may combine multiple inventors who share the name “RINGSDORF HELMUT”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BASF AG
9 patentsUS4293435AOct 6, 1981
Liquid-crystalline polymer phase having a cholesteric structure, processes for its preparation and its use
BASF AG143 citations96
US4631328ADec 23, 1986
Polymers containing mesogenic groups and dye radicals in the side chains
BASF AG93 citations93
US4702945AOct 27, 1987
Optical recording medium
BASF AG36 citations92
US5736068AApr 7, 1998
Triphenylene compounds and preparation of discotic liquid crystalline crosslinked polymers
BASF AG19 citations83
US4865762ASep 12, 1989
Polymers which form liquid-crystalline phases
BASF AG20 citations82
US4980081ADec 25, 1990
Polymers which form liquid-crystalline phases
BASF AG12 citations74
US5798197AAug 25, 1998
Use of low molecular-weight or polymeric organic compounds which are present in the columnar-helical phase and have liquid-crystalline properties
BASF AG13 citations72
US5393626AFeb 28, 1995
Increasing photoconductivity by adjusting the discotic phase
BASF AG3 citations62
US6036883AMar 14, 2000
Use of low molecular-weight or polymeric organic compounds which are present in the columnar-helical phase and have liquid-crystalline properties
BASF AG0 citations51
HOECHST AG
4 patentsUS5034277AJul 23, 1991
Film comprising at least one unimolecular layer
HOECHST AG10 citations73
US4960635AOct 2, 1990
Film consisting of one or more monomolecular layers
HOECHST AG11 citations71
US4970120ANov 13, 1990
Film comprising unimolecular layers
HOECHST AG11 citations70
US5258262ANov 2, 1993
Radiation-sensitive film composed of at least one mono-molecular layer of fluorine-containing amphiphiles
HOECHST AG5 citations60