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PHOTO CHEMICAL COMPANY LTD

Overview
  • Total Patents
    26
About

PHOTO CHEMICAL COMPANY LTD has a total of 26 patent applications. Its first patent ever was published in 1953. It filed its patents most often in Spain, United Kingdom and France. Its main competitors in its focus markets optics, measurement and basic materials chemistry are GEVAERT PHOTO PRODUCTEN NAAMLO, KODAK LTD and KODAK PATHE.

Patent filings in countries

World map showing PHOTO CHEMICAL COMPANY LTDs patent filings in countries
# Country Total Patents
#1 Spain 9
#2 United Kingdom 9
#3 France 5
#4 Germany 2
#5 United States 1

Patent filings per year

Chart showing PHOTO CHEMICAL COMPANY LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Jacobson Kurt Israel 8
#2 Aston Keith 3
#3 White Gerald Noel 2
#4 Noel White Gerald 1

Latest patents

Publication Filing date Title
DE1037852B Method and apparatus for photoelectric density measurement of photographic negatives
ES228016A1 Improvements introduced in the manufacture of positive material formed by various layers for colored photography (Machine-translation by Google Translate, not legally binding)
GB846870A Improvements in or relating to a method and device for grading photographic negatives for printing
ES224014A1 Improvements introduced in the manufacture of sophieticized photographic material monopaquete (Machine-translation by Google Translate, not legally binding)
ES222640A1 A procedure for the preparation of photographic sensitizers (Machine-translation by Google Translate, not legally binding)
ES219728A1 A method and apparatus for determining the exposure characteristics to produce a positive corrected in color (Machine-translation by Google Translate, not legally binding)
ES219727A1 A photographic opener (Machine-translation by Google Translate, not legally binding)
ES219725A1 Improvements introduced in the preparation of positive materials of multiple layers for photography in colors (Machine-translation by Google Translate, not legally binding)
ES219726A1 A method of determining the correction to apply to the light in the copy of negavites in unbalanced colors (Machine-translation by Google Translate, not legally binding)
DE1007168B Process for determining the exposure values for the production of color-corrected positive copies and multiple copiers for carrying out this process
GB779608A Improvements in the manufacture of colour photographic materials
GB774545A Improvements in photographic bleach-fix baths
GB778221A Improvements in or relating to photographic sensitizers
GB774194A Improvements in photographic bleach-fix baths
GB743759A Multilayer colour photographic positive material
GB748712A Device for determining the colour of the printing light to be used in making prints on multilayer material
GB747626A Improvements in and relating to photographic apparatus suitable inter alia for use in colour photography
GB748183A Method of colour correction in photographic colour printing