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ARZNEIMITTELFABRIK KREWEL LEUF

Overview
  • Total Patents
    15
About

ARZNEIMITTELFABRIK KREWEL LEUF has a total of 15 patent applications. Its first patent ever was published in 1951. It filed its patents most often in Germany and Austria. Its main competitors in its focus markets organic fine chemistry are LAFARQUIM, LAB PHARMACEUTICA DR C JANSSEN and LUXEMA SA.

Patent filings in countries

World map showing ARZNEIMITTELFABRIK KREWEL LEUFs patent filings in countries
# Country Total Patents
#1 Germany 12
#2 Austria 3

Patent filings per year

Chart showing ARZNEIMITTELFABRIK KREWEL LEUFs patent filings per year from 1900 to 2020

Focus industries

Top inventors

# Name Total Patents
#1 Stieglitz Dipl-Chem Dr Ernst 11
#2 Matz Dipl-Chem Dr Manfred 6
#3 Guenther Ernst 1
#4 Stamm Dr Helmut 1
#5 Hasselmann Dr Joachim 1
#6 Stieglitz Dr Ernst 1
#7 Viertel Guenter 1

Latest patents

Publication Filing date Title
DE1085534B Process for the preparation of malonic ester hydrazides
DE1103340B Process for the preparation of theophylline derivatives
DE1090669B Process for the production of xanthinekylsulfuric acids or their salts
DE1057118B Process for the production of the morpholides of higher fatty acids
DE1122534B Process for the preparation of 7- (ª ‰ -aminoaethyl) -xanthine derivatives
DE1090219B Process for the preparation of nitric acid esters of dimethylxanthine derivatives
DE1064066B Process for the production of xanthine derivatives
DE1100028B Process for the preparation of nitric acid esters of dialkyl-xanthine-carboxylic acidoxyalkylamides
DE1011888B Process for the preparation of theophylline derivatives
DE912214C Process for the preparation of halogenated pyridine-3-carboxylic acid esters
DE912215C Process for the preparation of iodine-containing pyridine-3-carboxylic acid esters