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RUTH RUDOLF

Overview
  • Total Patents
    13
About

RUTH RUDOLF has a total of 13 patent applications. Its first patent ever was published in 1909. It filed its patents most often in Austria, United Kingdom and Belgium. Its main competitors in its focus markets optics are DUFAY LOUIS, CHRISTENSEN JENS HERMAN and JENS HERMAN CHRISTENSEN.

Patent filings in countries

World map showing RUTH RUDOLFs patent filings in countries
# Country Total Patents
#1 Austria 4
#2 United Kingdom 3
#3 Belgium 2
#4 Canada 2
#5 United States 2

Patent filings per year

Chart showing RUTH RUDOLFs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Optics

Top inventors

# Name Total Patents
#1 Ruth Rudolf 13
#2 Schuller Aladar 4

Latest patents

Publication Filing date Title
US1093948A Photographic process of making prints in natural colors.
CA146314A Polychrome screen for colour photography
US1091443A Polychrome screen and process of making the same.
GB191222451A Improvements in or relating to Polychrome Screens for Colour Photography.
GB191019554A Improved Manufacture of Colour Screens for Colour Photography.
CA125164A Photographic plate or film
GB190925998A Improvements in Colour Photography.