Inventor
BECKMANN STEFAN
DE24 patents
⚠️ This page may combine multiple inventors who share the name “BECKMANN STEFAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
BASF AG
19 patentsUS5783649AJul 21, 1998
Polymerizable azo dyes with a thiophene structure
BASF AG26 citations92
US5738806AApr 14, 1998
Thienothienylazoanilines in nonlinear optics
BASF AG34 citations92
US5696243ADec 9, 1997
Diphenylamine compounds, polymers prepared therefrom and non-linear optics devices containing the same
BASF AG28 citations92
US5384378AJan 24, 1995
Copolymers with non-linear optical properties and the use thereof
BASF AG34 citations92
US6617470B1Sep 9, 2003
Method for esterifying (meth)acrylic acid with an alkanol
BASF AG14 citations84
US5777089AJul 7, 1998
Phenol derivatives, their preparation and their use, in particular in nonlinear optics
BASF AG10 citations74
US5616678AApr 1, 1997
Azo dyestuff- and urethane-containing polyadduct and its use in nonlinear optics
BASF AG13 citations74
US5549853AAug 27, 1996
Linked azo dyes
BASF AG11 citations74
US5483005AJan 9, 1996
Preparation of polymers with NLO-active side groups and the use thereof
BASF AG8 citations74
US5401612AMar 28, 1995
Polyesters containing nonlinear-optical chromophores, and the use thereof
BASF AG13 citations74
US6086637AJul 11, 2000
Trifluormethylpyridone based indolenine methine dyes
BASF AG6 citations73
US5892046AApr 6, 1999
Methine and azamethine dyes based on trifluoromethylpyridones
BASF AG6 citations62
US5756807AMay 26, 1998
Preparation of alkyl cyanoacetates
BASF AG4 citations62
US5502135AMar 26, 1996
Copolymers based on dicarboximides, alkenyl isocyanates and/or alkenylurethanes
BASF AG2 citations61
US5756753AMay 26, 1998
Methine and azamethine dyes based on naphthoquinones in nonlinear optics
BASF AG1 citations52
US5714616AFeb 3, 1998
Thiazolemethine dyes
BASF AG1 citations52
US5623075AApr 22, 1997
Thiazolemethine dyes
BASF AG1 citations52
US5466812ANov 14, 1995
Preparation of N-aminopyridones
BASF AG1 citations52
US5811370ASep 22, 1998
Azamethine dyes
BASF AG0 citations41