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CLARK ALEX LTD

Overview
  • Total Patents
    11
About

CLARK ALEX LTD has a total of 11 patent applications. Its first patent ever was published in 1969. It filed its patents most often in Canada, United States and Germany. Its main competitors in its focus markets optics and machines are FISCHER IND INC, MEEK JAMES WYNDHAM and BLANRIMA PTY LTD.

Patent filings in countries

World map showing CLARK ALEX LTDs patent filings in countries
# Country Total Patents
#1 Canada 4
#2 United States 3
#3 Germany 2
#4 United Kingdom 2

Patent filings per year

Chart showing CLARK ALEX LTDs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Optics
#2 Machines

Top inventors

# Name Total Patents
#1 Ramsdale Roy 6
#2 Masygan R 2
#3 Ramsdale R 1

Latest patents

Publication Filing date Title
US3981092A Slide frame
CA994302A Apparatus for dispensing photographic chemicals
CA989372A Reel for photographic sheet material
US3763759A Processing of photographic roll film
CA930225A Photographic developer apparatus
GB1326009A Photographic developer reel