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CHROMOGEN INC

Overview
  • Total Patents
    52
About

CHROMOGEN INC has a total of 52 patent applications. Its first patent ever was published in 1937. It filed its patents most often in United States and France. Its main competitors in its focus markets optics, machines and basic materials chemistry are MARILYN LEVY, CIE D EXPL DES PROCEDES DE PHO and BELA GASPAR.

Patent filings in countries

World map showing CHROMOGEN INCs patent filings in countries
# Country Total Patents
#1 United States 50
#2 France 2

Patent filings per year

Chart showing CHROMOGEN INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Bela Gaspar 35
#2 Walter Michaelis 7
#3 Paul Goldfinger 3
#4 Laszlo Schwarc 2
#5 Fritz Jaffe 1
#6 Daniel Dreyfuss Paul 1
#7 Paul Dreyfuss 1
#8 Erich Glaser 1

Latest patents

Publication Filing date Title
US2514234A Process for the manufacture of color photographic images
US2470769A Color photographic material and processes for producing same
US2410025A Production of colored photographic pictures
US2514233A Process for the manufacture of golor photographic images
US2465586A Process for producing aldehydes and derivatives thereof
US2348894A Process and treating bath for the production of colored photographic pictures
US2367936A Photographic printing method
US2320358A Method of producing color separation images
US2348735A Method of and material for producing corrected photographic images
US2353661A Process of obtaining photographic images
US2317369A Printing process for color photography
US2347119A Process for producing photographic multicolor pictures
US2356759A Color photographic material and process for producing same
US2361541A Process for the manufacture of color photographic images
US2368463A Photographic material and processes for treating same
US2361936A Photographic materials and process of manufacturing same
US2310226A Process for the manufacture of photographic materials
US2296843A Dyed substance
US2278984A Method of treating color photographic materials
US2313993A Organic sulphur and selenium compounds