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SELLE GUSTAV

Overview
  • Total Patents
    24
About

SELLE GUSTAV has a total of 24 patent applications. Its first patent ever was published in 1897. It filed its patents most often in United Kingdom, Spain and Denmark. Its main competitors in its focus markets optics and machines are KRAYN ROBERT, GASPAR BELA and KALVAR CORP.

Patent filings in countries

World map showing SELLE GUSTAVs patent filings in countries
# Country Total Patents
#1 United Kingdom 10
#2 Spain 7
#3 Denmark 3
#4 Canada 2
#5 France 1
#6 United States 1

Patent filings per year

Chart showing SELLE GUSTAVs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Optics
#2 Machines

Focus technologies

Top inventors

# Name Total Patents
#1 Selle Gustav 17

Latest patents

Publication Filing date Title
CA84624A Photographic colour screen
CA84625A Dyeing photographic plate
GB190312515A Improvements in and relating to Color Screens for Photographic Purposes
GB190312514A Improvements in Photographic Apparatus for Three Color Photography
GB190312513A Improvements in Dyeing Photographic Plates
GB190308498A Improvements relating to the Preparation of Back Grounds or Surfaces for Color Photographs.
GB189913666A Improvements in the Method of and Means for Producing Images in Complementary Colors, suitable also for Use in Taking, Projecting, Inspecting, Testing, or Combining Three Color Photographs, Prints, or the like.
GB189912515A Improvements in the Manufacture of Selective Color Light Filters for Photo Optical Purposes.
GB189912517A Improvements in the Formation of Films for use in Color Photography.
GB189912516A Improvements relating to the Sensitizing and Relative Sensitive Adjustment of Photographic Plates or the like for use in Color Photography and to the Measurement of Time Exposure of said Plates.
GB189904290A An Improved Process for the Production of Photographs in Natural Colors upon Paper or other Flexible Support.
US654766A Production of colored photographs.
GB189711133A Improvements in Photographic Dark Backs for Successive Exposures for the Purposes of Color Photography.