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HAHNEWALD GMBH

Overview
  • Total Patents
    15
About

HAHNEWALD GMBH has a total of 15 patent applications. Its first patent ever was published in 1992. It filed its patents most often in Germany, EPO (European Patent Office) and Czechia. Its main competitors in its focus markets surface technology and coating, environmental technology and chemical engineering are AQUAECOS LTD, BAKHIR VITOLD M and ORO AS.

Patent filings in countries

World map showing HAHNEWALD GMBHs patent filings in countries

Patent filings per year

Chart showing HAHNEWALD GMBHs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Hahnewald Dieter 7
#2 Fischwasser Klaus Prof Dr 7
#3 Fischwasser Klaus 6
#4 Fenk Bernd 6
#5 Hahnewald Dieter Dipl Ing 6
#6 Lieber Hans-Wilhelm Prof Dr 5
#7 Fenk Bernd Dipl Chem 5
#8 Haftendorn Manfred Dr 3
#9 Isberner Katrin 3
#10 Seibt Frieder 3

Latest patents

Publication Filing date Title
EP0667319A1 Process and reactor for the microbiological treatment of water with a high oxygen demand
CZ46994A3 Method of prolonging service life of electrolyte by eliminating organic impurities
DE4344613A1 Process for the catalytic-electrochemical reduction of nitrate-containing solutions and use of the treated aqueous solutions as regeneration agents for ion exchangers
EP0601504A1 Process for prolonging the useful life of electrolyte solutions by eliminating noxious organic compounds
DE4328876A1 Method of extending the useful life of electrolyte solutions by eliminating interfering organic substances
DE4318793A1 Method of extending the useful life of electrolyte solutions by eliminating interfering organic substances
DE4241867A1 Increasing working life of electrolytic bath contg. heavy metals - by removing harmful organic material with adsorption polymer which is then itself regenerated with acid or alkali