Inventor
LANGNER ROLAND
DE13 patents
⚠️ This page may combine multiple inventors who share the name “LANGNER ROLAND”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HAARMANN & REIMER GMBH
11 patentsUS5585091ADec 17, 1996
Use of benzazoles UV absorbers, new benzazoles and a process for their preparation
HAARMANN & REIMER GMBH91 citations95
US4562067ADec 31, 1985
Preparation of novel dibenzoylmethane derivative sunscreen agents
HAARMANN & REIMER GMBH106 citations94
US5965066AOct 12, 1999
Indanylidene compounds, a process for their preparation and their use as UV absorbers
HAARMANN & REIMER GMBH24 citations92
US5961960AOct 5, 1999
Use of substituted benzazoles as UV absorbers, new benzazoles and processes for their preparation
HAARMANN & REIMER GMBH33 citations92
US5783725AJul 21, 1998
Stabilized lactic acid menthyl ester
HAARMANN & REIMER GMBH42 citations90
US6258963B1Jul 10, 2001
Benzylidene-γ-butyrolactones, process for their preparation and their use as UV absorber
HAARMANN & REIMER GMBH7 citations73
US6039939AMar 21, 2000
N-acyl-hydroxyamino acid esters and their use
HAARMANN & REIMER GMBH12 citations73
US6037473AMar 14, 2000
Use of substituted benzazoles as UV absorbers, new benzazoles and processes for their preparation
HAARMANN & REIMER GMBH12 citations73
US6153175ANov 28, 2000
Indanylidene compounds, a process for their preparation and their use as UV absorbers
HAARMANN & REIMER GMBH3 citations62
US6042814AMar 28, 2000
Sulphonic acids and their use as UV absorbers
HAARMANN & REIMER GMBH5 citations61
US4455295AJun 19, 1984
N-(p-Sulfophenyl) cinnamamide as sunscreen agent
HAARMANN & REIMER GMBH5 citations61