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KREWEL WERKE GMBH

Overview
  • Total Patents
    22
About

KREWEL WERKE GMBH has a total of 22 patent applications. Its first patent ever was published in 1961. It filed its patents most often in Germany, EPO (European Patent Office) and WIPO (World Intellectual Property Organization). Its main competitors in its focus markets organic fine chemistry, pharmaceuticals and measurement are NANJING FUHAIAOSAI PHARMACEUTICAL CO LTD, GODEK DENNIS MICHAEL and GUERBET LAB ANDRE.

Patent filings in countries

World map showing KREWEL WERKE GMBHs patent filings in countries

Patent filings per year

Chart showing KREWEL WERKE GMBHs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Guenther Ernst 3
#2 Schierstedt Detlef Dr 3
#3 Ernst Guenther 3
#4 Kurt Schmidt Dipl-Chem 3
#5 Schierstedt Detlef 2
#6 Kurt Dipl-Chem 2
#7 Schmidt 2
#8 Viefhues Reiner Dr Med 2
#9 Schmidt Kurt 1
#10 Reichert Alfred 1

Latest patents

Publication Filing date Title
DE4434170C1 St. John's wort extracts
DE4401646A1 Optimally releasing kava extracts
WO9221357A1 Concentrated and/or dry plant extracts
DE4118710A1 Prepn. of dry and viscous plant extracts - by distn. of ethanolic aq. fluid extracts, extn. of distillate with an immiscible liq. extractant and working up the distn. residue and extract
DE3731528A1 Use of trans-4-[(2-amino-3,5-dibromobenzyl)amino]cyclohexanol for the local treatment of disorders of the eye
DE3613414A1 Measuring cup
DE3610997A1 AMBROXOL NOSE SPRAY
DE2831728A1 Medicaments for treating headache - contg. vasoactive, tranquillising, analgesic and CNS-active agents
DE2828657A1 MEDICINES FOR TREATING HYPOTONIA
DE1288586B N-AEthyl-N- [2-benzyl-2-ethyl-3- (N ', N'-diaethylcarbamoyloxy) -butyl] -carbamic acid ethyl ester and process for its preparation
DE1595861A1 Process for the production of pyridyl-methylidene-bis- (o-acetoxybenzamides)
DE1284416B N-AEthyl-N- [2,2-diaethyl-3-diaethylcarbamoyloxy-butyl- (1)] - N ', N'-diaethyl-urea and process for its preparation
DE1570034A1 Process for the production of nicotinic acid amides
DE1288587B N- (3-Carbamoyloxyalkyl) -carbamidsaeureaethylester and process for their preparation
DE1445973A1 Process for the preparation of carbamic acid derivatives with a tetrahydrooxazine structure
DE1284428B Process for the preparation of tetrahydrofuryl or tetrahydropyranyl carbamic acid esters
DE1445969A1 Process for the preparation of basic 3,4,5-trimethoxybenzoic acid esters
DE1445968A1 Process for the production of basic diphenyl acetic acid esters
DE1287581B Process for the preparation of 2- (pyridyl) -2, 3-dihydro-1, 3-benzoxazin-4-one derivatives
DE1445966A1 Process for the preparation of 1,3-aminopropanols