Inventor

STEIN INGEBORG

DE13 patents

⚠️ This page may combine multiple inventors who share the name “STEIN INGEBORG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

MERCK PATENT GMBH

10 patents

US5520906AMay 28, 1996

Triazine derivatives with UV filter properties

MERCK PATENT GMBH21 citations92

US5501850AMar 26, 1996

Use of benzimidazole derivatives as light protection filters

MERCK PATENT GMBH28 citations89

US6344566B1Feb 5, 2002

Method for producing enantiomer-free N-methyl-N-[(1S)-1-phenyl-2-((3S)-3-hydroxypyrolidine-1-yl)ethyl]-2,2-diphenylacetamide

MERCK PATENT GMBH14 citations81

US5144081ASep 1, 1992

Dialkoxybenzylidene-camphor derivatives

MERCK PATENT GMBH16 citations73

US5473079ADec 5, 1995

Process for preparing 2-arylbenzimidazole-5-sulfonic acids

MERCK PATENT GMBH13 citations70

US5399563AMar 21, 1995

Benzylidenequinuclidinones

MERCK PATENT GMBH3 citations59

US6573404B2Jun 3, 2003

Method for producing ortho-alkylated benzoic acid derivatives

MERCK PATENT GMBH0 citations51

US6277357B1Aug 21, 2001

Ketotricyclo[5.2.1.0]decane derivatives

MERCK PATENT GMBH0 citations51

US5968482AOct 19, 1999

α-hydroxyketoalkyl derivatives as light protection filters

MERCK PATENT GMBH1 citations51

US5628988AMay 13, 1997

Ketotricyclo[5.2.1.0]decane derivatives

MERCK PATENT GMBH0 citations51

MERCK KGAA

2 patents

US6350904B1Feb 26, 2002

Method for producing ortho-alkylated benzoic acid derivatives

MERCK KGAA17 citations92

US6515143B2Feb 4, 2003

Method for producing ortho-alkylated benzoic acid derivatives

MERCK KGAA0 citations51

MERCK GMBH

1 patent

US5600007AFeb 4, 1997

Use of α-hydroxyketoalkyl derivatives as light protection filters

MERCK GMBH4 citations62