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DURAND & HUGUENIN AG

Overview
  • Total Patents
    577
About

DURAND & HUGUENIN AG has a total of 577 patent applications. Its first patent ever was published in 1914. It filed its patents most often in Switzerland, Germany and United Kingdom. Its main competitors in its focus markets basic materials chemistry, textiles and paper and surface technology and coating are COLOURTEX IND LTD, MORDECAI MENDOZA and GESELLSCHAFT FUER CHEMISCHE INDUSTRIE IN BASEL.

Patent filings in countries

World map showing DURAND & HUGUENIN AGs patent filings in countries
# Country Total Patents
#1 Switzerland 214
#2 Germany 137
#3 United Kingdom 116
#4 France 50
#5 United States 34
#6 Austria 15
#7 Belgium 7
#8 Spain 4

Patent filings per year

Chart showing DURAND & HUGUENIN AGs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Huguenin Ag Durand 77
#2 Huguenin A-G Durand 67
#3 G Durand Huguenin A 21
#4 Grossmann Hans Dr 14
#5 Oppliger Walter Dr 13
#6 Glenz Karl Dr 10
#7 Oppliger Dr Walter 9
#8 Brentano Willy Dr 9
#9 Keller Heinz Dr 9
#10 Ludwig Zeh 7

Latest patents

Publication Filing date Title
US3524842A Water-soluble cationic phenylazo-naphthol dyestuffs containing a quaternary ammonium group
GB1167176A Process for Dyeing or Printing Structures Composed of Metal-modified Polymers of Unsaturated Hydrocarbons
US3497493A Water-soluble cationic metal complexes of formazan dyestuffs
GB1114097A Water-soluble cationic metal complexes of formazane dyestuffs and process for their manufacture
GB1088458A Water-soluble, metallizable disazo- and trisazo-dyestuffs
GB1065816A Process for simultaneously bleaching and dyeing cellulose textile fibres
US3202550A Process for dyeing aluminum oxide layers
GB1012487A New, water-soluble dyestuffs of the azo- and anthraquinone series containing the glyoxaldiureine radical and process for the preparation thereof
GB961885A New water-soluble leuco-sulphuric acid ester salts of vat dyestuffs of the anthraquinone series and a process of making same
GB961884A New water-soluble leuco-sulphuric acid ester salts of vat dyestuffs and the anthraquinone series and a process of making same
GB968468A New water-soluble leuco-sulphuric acid ester salts of vat dyestuffs of the anthraquinone series and a process of making same
GB962017A New water-soluble leuco-sulphuric acid ester salts of vat dyestuffs of the anthraquinone series and a process of the anthraquinone series and a process of making same
GB952803A New and useful water-soluble di-leuco-sulphuric acid ester salts of vat dyestuffs of the anthraquinone series and process for their manufacture
GB961351A Method for the manufacture of water-soluble leuco-sulphuric acid ester salts of the anthraquinone series
GB938152A New metalliferous ortho: ortho-dihydroxy-azo-dyestuffs and process for their manufacture
GB930294A Process for the manufacture of water-soluble salts of sulphuric acid esters of leucoanthraquinone-azo-dyestuffs
GB915013A Process for the manufacture of new metallisable 4-hydroxy-5-carboxyphenyl-2:2-dihydroxyazo-dyestuffs and 2-sulphate esters thereof
US3060167A Process for the manufacture of new metallizable 4-hydroxy-5-carboxyphenyl-2:2'-dihydroxy-azo-dyestuffs
GB901748A Metallisable azo-dyestuffs and process for their manufacture
GB898353A Process for the manufacture of new metallisable 4-hydroxy-5-carboxyphenyl-2:2-dihydroxy-azo-dyestuffs