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GEORGES LISSAC

Overview
  • Total Patents
    28
About

GEORGES LISSAC has a total of 28 patent applications. Its first patent ever was published in 1945. It filed its patents most often in United Kingdom, Germany and United States. Its main competitors in its focus markets optics, machine tools and medical technology are MENRAD FERDINAND FA, KORYOEYETECH CO LTD and MARWITZ & HAUSNER.

Patent filings in countries

World map showing GEORGES LISSACs patent filings in countries
# Country Total Patents
#1 United Kingdom 14
#2 Germany 7
#3 United States 5
#4 Canada 2

Patent filings per year

Chart showing GEORGES LISSACs patent filings per year from 1900 to 2020

Focus industries

Top inventors

# Name Total Patents
#1 Lissac Georges 5
#2 Passet Robert 4
#3 Georges Lissac 3
#4 Robert Passet 2
#5 Joyner Sidney Leslie Vernon 1

Latest patents

Publication Filing date Title
GB1086990A Improvements in or relating to protective goggles
GB996673A Improvements in or relating to supplementary front pieces for ophthalmic spectacles
GB980868A Improvements in spectacles
GB951524A Improvements in or relating to multifocal spectacle lenses
GB963915A Improvements in or relating to spectacle frames
GB940089A Improvements in or relating to spectacles
US3087285A Machine for shaping the edges of spectacle glasses
US2894429A Spectacles
GB720855A Improvements in spectacles
US2770167A Clip-on sunglasses
GB706544A Improvements in screen devices adaptable over spectacles and the like
US2602372A Removable screen for spectacles
GB673243A Improvements in removable front-pieces for spectacles
GB613843A Improved ophthalmic spectacles
US2518914A Suspension type spectacle mounting
GB602877A Improvements in or relating to bi-focal glasses for spectacles or eyeglasses
CA553226A Clip-on sunglasses
CA497302A Removable screens for spectacles