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CHEMIEWERK HOMBURG ZWEIGNIEDER

Overview
  • Total Patents
    41
About

CHEMIEWERK HOMBURG ZWEIGNIEDER has a total of 41 patent applications. Its first patent ever was published in 1956. It filed its patents most often in Germany, Switzerland and Denmark. Its main competitors in its focus markets pharmaceuticals, organic fine chemistry and biotechnology are WUHAN UNITED PHARMACY CO LTD, BAI LINGQIANG and FUAN PHARMACEUTICAL GROUP QINGYUTANG PHARMACEUTICAL CO LTD.

Patent filings in countries

World map showing CHEMIEWERK HOMBURG ZWEIGNIEDERs patent filings in countries

Patent filings per year

Chart showing CHEMIEWERK HOMBURG ZWEIGNIEDERs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Erwin Kohlstaedt 5
#2 Kohlstaedt Dr Erwin 5
#3 Isaac Dr Otto 4
#4 Kohlstaedt Erwin 3
#5 Schmidt Dipl-Chem Dr Wilhelm 3
#6 Karl Heinz Dr Klingler 3
#7 Kohlstaedt Erwin Dr 3
#8 Schneider Dr Herbert 3
#9 Karl-Heinz Klingler 2
#10 Isaac Otto Dr 2

Latest patents

Publication Filing date Title
ES405913A3 Procedure for the preparation of derivatives of alcohilxantina basically substituted. (Machine-translation by Google Translate, not legally binding)
ES401839A3 Procedure for the preparation of derivatives of alcohilxantina basically substituted. (Machine-translation by Google Translate, not legally binding)
DE1182624B Procedure for activating myrosinase
DE1182776B Process for increasing the solubility of theophylline
US3029239A Basic substituted 1-and 7-alkylxanthines or salts thereof
US3046275A N-substituted 2-phenyl-7-aminoalkoxy chromones
DE1095991B Process for the preparation of a stable and injectable solution containing 1,2-dithia-cyclopentane-3-valeric acid
DE1119868B Process for the preparation of basic substituted alkylxanthine derivatives
US3065234A Preparation of 1-(beta-hydroxypropyl)-theobromine
DE1093951B Procedure for the extraction of drugs containing proazulene
DE1095988B Process for making a durable drug product
DE1123329B Process for the preparation of basic substituted alkylxanthine derivatives.
DE1095990B Process for the production of water-soluble preparations and concentrated, stable aqueous solutions of digoxin
DE1095285B Process for the preparation of basic substituted alkylxanthine derivatives
DE1154899B Process for increasing the solubility of purines and purine derivatives
DE1151096B Process for the production of stable, concentrated aqueous solutions of oxyalkylated theophylline or oxyalkylated theobromine compounds
CA614205A Digoxin-substituted xanthine preparations
CA685260A 7-theophylline derivatives and process for their manufacture
CA655481A N-substituted 2-phenyl-7-aminoalkoxy chromones and a process for preparing them