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PURMA CAMERAS LTD

Overview
  • Total Patents
    12
About

PURMA CAMERAS LTD has a total of 12 patent applications. Its first patent ever was published in 1935. It filed its patents most often in United Kingdom, United States and Canada. Its main competitors in its focus markets optics and machines are BESANCENOT SERGE, GRAFLEX INC and CHARLES BOUIN.

Patent filings in countries

World map showing PURMA CAMERAS LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 4
#2 United States 4
#3 Canada 2
#4 Germany 1
#5 France 1

Patent filings per year

Chart showing PURMA CAMERAS LTDs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Optics
#2 Machines

Focus technologies

# Technology
#1 Cameras
#2 Unspecified technologies

Top inventors

# Name Total Patents
#1 Croger Mayo Alfred 3
#2 Joseph Terrett 3
#3 Mayo Alfred Croger 2
#4 Terrett Joseph 1
#5 Wood William Barton 1
#6 Terratt Joseph 1
#7 Barton Wood William 1

Latest patents

Publication Filing date Title
GB701368A Improvements in or relating to photographic cameras
US2392071A Camera shutter
GB555049A Improvements in or relating to focussing screens, more particularly for photographic apparatus
GB553558A Improvements in or relating to cameras
GB550291A Improvements in or relating to focussing attachments for miniature cameras
US2134309A Focal-plane camera shutter mechanism
US2134308A Protective device for photographic cameras
US2134307A Camera with focal-plane shutter
CA422148A Camera
CA355078A Camera