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BARNET ENSIGN LTD

Overview
  • Total Patents
    12
About

BARNET ENSIGN LTD has a total of 12 patent applications. Its first patent ever was published in 1944. It filed its patents most often in Canada, United Kingdom and United States. Its main competitors in its focus markets optics and machines are HERMANN SEUFERT, VICTOR ALEXANDER FERDINAND and WILLIAMS BROWN AND EARLE INC.

Patent filings in countries

World map showing BARNET ENSIGN LTDs patent filings in countries
# Country Total Patents
#1 Canada 3
#2 United Kingdom 3
#3 United States 3
#4 Denmark 2
#5 France 1

Patent filings per year

Chart showing BARNET ENSIGN 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 Hunter Douglas Gordon 4
#2 Gordon Hunter Douglas 3
#3 Ansell Edgar George 1

Latest patents

Publication Filing date Title
GB757353A Improvements in photographic shutters with flashgun operating means
GB751752A Improvements in focusing devices for photographic enlargers
GB634511A Improvements in and relating to focussing range-finders for photographic cameras
US2404291A Roll-film winding mechanism
US2412507A Photographic masking easel
US2406772A Folding photographic camera
CA441674A Photographic masking device
CA436060A Roll film winding mechanism
CA441825A Folding photographic camera