Inventor

SCHEFCZIK ERNST

DE50 patents

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

SCHEFCZIK ERNST

BASF AG

[1,3,4] Triazolo [1,5-A] pyridines

Acylamino-substituted isoxazole or isothiazole derivatives, their preparation and their use

Triazolopyridine dyes and thermal transfer of methine dyes

Naphtholactam dyes and optical recording medium containing these dyes

Isothiazolylazo dyes

N-aminopyridone dyes

Azo dyestuffs containing a diazo component from the aniline series and coupling component from the triazolopyridine series

N-aminopyridone dyes

Thiophene derivatives

Triazolopyridine dyes and thermal transfer of methine dyes

Thiazoleazo dyes having a diazo component from the isothiazole or thiadiazole series

(1,2,4)triazolo[2,3-a]pyridines

Azo dyes with a diazo component of the 3-amino thiophene series and a coupling component of the pyridine, pyridone or pyrazole series

Navy and black dye mixtures: thiophene azo disperse dye and red, yellow or orange disperse dye

2-aminothiophene radical substituted by an electron withdrawing group

Isothiazolylazo dyes having aminophenyl and aminonaphthyl components

3-(β-aminoethyl)-4-cyano-isothiazolylazo dyes

Monoazo disperse dyes containing a nitrophenyl group and a homophthalimide group

Basic arylmercaptonaphtholactam dyes

2,4-Dioxotetrahydropyrimido-(1,2-a)-benzimidazole substituted isoindoline dyes and their use

Naphtholactam dyes and optical recording medium containing these days

Sulfur compounds

Phenylazotriazolopyridine dyestuffs

Sulfur compounds useful for preparation of dyes

Novel navy and black disperse dye mixtures including amino-phenyl thiophene azo disperse dye and red, yellow or orange disperse dyes

Preparation of 2-cyano-3-aminoacrylonitrile derivatives

3-pyridylisothiazoleazo compounds useful as disperse dyes

Isothiazoleazo hydroxypyridone dyes

Mono azo dyes containing as diazo radical a thiophene radical which possesses an oxime group

Isothiazolazo dyes having coupling components which are free from unsaturated aliphatic radicals

Naphtholactam derivatives

Naphtholactam dyes

Naphtholactam dyes

Quinazoline dyes

Naphtholactam dyes

Azo dyes with A2-aminothiophene dye azo component and a coupling component and coupling component of the diphenylamine series

Isoindoline colorants

Lactones of the benzaxanthere series and dye-forming components for use in duplication processes

Preparation of pyridine dyes

Isothiazolylazo dyes having aminophenyl and aminonaphthyl components

Preparation of N-aminopyridones

3-aminobenzene-1,2,4,5-tetracarboxylic dihydrazides and composition capable of chemiluminescence, and 3-aminobenzene-1,2,4,5-tetracarboxylic dianhydrides

Preparation of cyano-substituted enol ethers

Preparation of indole derivatives

Lactones of the benzazaxanthene series and dye-forming components for duplication processes

Production of 3-monochloro-2,4,5-trialkylbenzophenones and 3,6-dichloro-2,4,5-trialkylbenzophenones

Triazolopyridine dyes

Thiopheneazo dyes with a coupling component based on m-phenylenediamine

SANDOZ AG

Dyes containing thiophene radicals

Dyes containing thiophene radicals