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CIE D EXPL DES PROCEDES DE PHO

Overview
  • Total Patents
    12
About

CIE D EXPL DES PROCEDES DE PHO has a total of 12 patent applications. Its first patent ever was published in 1922. It filed its patents most often in France, United Kingdom and Austria. Its main competitors in its focus markets optics and machines are MARILYN LEVY, SCOTT GRAPHICS and CHROMOGEN INC.

Patent filings in countries

World map showing CIE D EXPL DES PROCEDES DE PHOs patent filings in countries
# Country Total Patents
#1 France 6
#2 United Kingdom 4
#3 Austria 1
#4 Germany 1

Patent filings per year

Chart showing CIE D EXPL DES PROCEDES DE PHOs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Optics
#2 Machines

Focus technologies

# Technology
#1 Photosensitive materials
#2 Unspecified technologies

Top inventors

# Name Total Patents
#1 Dufay Louis 3

Latest patents

Publication Filing date Title
GB322454A Improvements in or relating to apparatus for making mosaicscreens for colour photography
GB322432A Improvements in or relating to colour photography
GB322433A Improvements in or relating to colour photography
GB197912A Improved manufacture of photographic prints in colours