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DEUTSCHE HYDRIERWERKE AG

Overview
  • Total Patents
    925
About

DEUTSCHE HYDRIERWERKE AG has a total of 925 patent applications. Its first patent ever was published in 1922. It filed its patents most often in Germany, France and United Kingdom. Its main competitors in its focus markets organic fine chemistry, macromolecular chemistry and polymers and basic materials chemistry are ARMOUR IND CHEM CO, COALITE CHEM PROD LTD and GREAT LAKES CHEMICAL FRANCE.

Patent filings in countries

World map showing DEUTSCHE HYDRIERWERKE AGs patent filings in countries
# Country Total Patents
#1 Germany 440
#2 France 222
#3 United Kingdom 119
#4 Switzerland 70
#5 Austria 31
#6 United States 30
#7 Denmark 6
#8 Spain 5
#9 Belgium 1
#10 Canada 1

Patent filings per year

Chart showing DEUTSCHE HYDRIERWERKE AGs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Hydrierwerke Aktiengesellschaf 69
#2 Hentrich Winfried Dr 51
#3 Schrauth Dr Walther 32
#4 Schirm Erik Dr 22
#5 Guendel Wolfgang Dr 19
#6 Hueter Dr Richard 18
#7 Hentrich Winfrid Dr 17
#8 Goette Ernst Dr 17
#9 Endres Rudolf Dr 17
#10 Kirstahler Alfred Dr 17

Latest patents

Publication Filing date Title
DE888493C Process for the production of firmly adhering and shiny galvanic copper coatings
GB721204A Improvements in and relating to the electrolytic deposition of metals
DE871392C Process for the production of firmly adhering and shiny galvanic metal coatings
DE863159C Process for the production of firmly adhering and shiny galvanic metal coatings
DE879991C Process for the production of mono- or polyhydric primary alcohols
DE882988C Process for the production of mono- or polyhydric primary alcohols
DE897013C Solvents, gelatinizers and softeners
DE861255C Process for the production of solids which are colloidally dispersible in water
DE895122C Process for reducing the corrosive influence of water and aqueous solutions on iron
DE846545C Process for the preparation of halogen-containing ª ‡, ª ‡ -Diarylalkanes
DE860270C Swelling, gelatinizing and softening agents
DE849154C High-boiling solvents, especially for paint purposes
DE852690C Process for the preparation of sulfonation products of tetrahydronaphthalene and its homologues
DE863057C Process for the production of water-soluble condensation products
DE850045C Process for the production of flammable, water-immiscible organic liquids
DE879444C Process for the production of lubricants and propellant oils for submarine weapons
DE894114C Process for the production of coagulations of the 4,4'-diaminostilbene
DE889070C Dissolving, swelling, gelatinizing and plasticizing agents
DE879463C Solvents, gelatinizers and softeners
DE871643C Solvents, gelatinizers and softeners