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TETRAS SA

Overview
  • Total Patents
    25
About

TETRAS SA has a total of 25 patent applications. Its first patent ever was published in 1981. It filed its patents most often in EPO (European Patent Office), United States and Canada. Its main competitors in its focus markets optics are PHOTON CHROMA INC, HOFFMAN LIONEL B and GRAFOSOL SPA.

Patent filings in countries

World map showing TETRAS SAs patent filings in countries
# Country Total Patents
#1 EPO (European Patent Office) 7
#2 United States 7
#3 Canada 5
#4 Australia 2
#5 France 2
#6 India 2

Patent filings per year

Chart showing TETRAS SAs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Optics

Focus technologies

# Technology
#1 Electrography
#2 Cameras

Top inventors

# Name Total Patents
#1 Hoffman Lionel B 14
#2 Berger Jean-Claude 5
#3 Hoffman Lionel Bloomfield 2
#4 Tetras S A 1
#5 Hoffmann Lionel B 1
#6 Hoffman Lionel Broomfield 1
#7 Berger Jean Claude 1

Latest patents

Publication Filing date Title
FR2564610A1 COPIER TAKING ASSEMBLY
CA1210439A Removably mounted electrophotographic belt assembly for electrophotographic copier
FR2564608A1 DRAWER FOR PHOTORECEPTOR SLEEVE FOR COPIER AND ESPECIALLY FOR ELECTROSTATIC COPIER
US4470690A Removably mounted electrophotographic belt assembly for electrophotographic copier
US4487499A Synchronized document feed for electrophotographic imaging copier apparatus
US4470691A Illuminating means for electrophotographic copier apparatus
US4536075A Brush toning means for electrophotographic copier apparatus
AU547684B1 Table top copy machine
US4415263A Electrophotographic copier apparatus