Learn more

RAVENSBERG G M B H

Overview
  • Total Patents
    24
About

RAVENSBERG G M B H has a total of 24 patent applications. Its first patent ever was published in 1954. It filed its patents most often in United Kingdom, United States and Belgium. Its main competitors in its focus markets organic fine chemistry are LAEAEKETEHDAS ORION OY, DISHMAN PHARMACEUTICALS AND CH and IND CHIMICA PRODOTTI FRANCIS S.

Patent filings in countries

World map showing RAVENSBERG G M B Hs patent filings in countries
# Country Total Patents
#1 United Kingdom 7
#2 United States 5
#3 Belgium 3
#4 Canada 3
#5 France 3
#6 Germany 2
#7 Austria 1

Patent filings per year

Chart showing RAVENSBERG G M B Hs patent filings per year from 1900 to 2020

Focus industries

Top inventors

# Name Total Patents
#1 Siemer Harm 4
#2 Harm Siemer 4
#3 Doppstadt Adolf 4
#4 Stark Hans C 2
#5 Adolph Doppstadt 2
#6 Staerk Hans Carl 1
#7 Kasparek Dr Hermann 1
#8 Kurzen Fritz 1
#9 Siemer Dr Harm 1
#10 Otto Hengen 1

Latest patents

Publication Filing date Title
GB1246733A Salts of aminoquinaldine derivative and preparation thereof
GB852727A Analgesic compounds
US3005818A 1-phenyl-2, 3-dimethyl-4-morpholino methyl pyrazolone-(5) compounds
GB861980A Amino aralkyl nitriles
US3028389A Basic aralkyl nitriles and process for their preparation
GB850142A Salts of 2,6-di-tert-butyl naphthalene-disulphonic acids
US2943022A Substituted 1-phenyl-2, 3-dimethyl-4-morpholino methyl pyrazolone-(5) compounds and process of making same
GB830577A Analgesic compounds
US3018222A Central stimulant and appetite depressant composition
DE1109692B Process for the preparation of 2-phenyl-3-methyl-1-oxa-4-azacycloheptane
US2868786A Esters of phenyl acetic acids and a process of making same
GB817932A New compounds derived from tetrahydro-oxazine compounds and theophylline or halogen-theophyllines
GB816576A Substituted tetrahydro-1,4-oxazine compounds
DE947966C Process for the preparation of 2,6-di-tert-butylnaphthalene
CA900485A 1'-bisquaternary ammonium salts of 4-aminoquinaldine compounds
CA671946A Procedure for the manufacture of basic aralkyl nitriles
CA650098A Process for the preparation of multiple substituted morpholines with secondary nitrogen atom