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LEWIS BERGER & SONS LTD

Overview
  • Total Patents
    256
About

LEWIS BERGER & SONS LTD has a total of 256 patent applications. Its first patent ever was published in 1936. It filed its patents most often in United Kingdom, Ireland and Germany. Its main competitors in its focus markets macromolecular chemistry and polymers, basic materials chemistry and chemical engineering are LEWIS BERGER & SONS LIMITED, SCADO KUNSTHARSINDUSTRIE N V and DESOTO CHEMICAL COATINGS.

Patent filings in countries

World map showing LEWIS BERGER & SONS LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 102
#2 Ireland 45
#3 Germany 22
#4 Denmark 21
#5 Finland 21
#6 Canada 18
#7 France 17
#8 Austria 7
#9 Spain 2
#10 Belgium 1

Patent filings per year

Chart showing LEWIS BERGER & SONS LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Armitage Frank 50
#2 Hewitt Donald Helmsley 20
#3 Wakeford Leslie Ernest 18
#4 Hammond Wallace Thomas Craven 14
#5 Frank Armitage 12
#6 Helmsley Hewitt Donald 11
#7 Hewitt Donald Helmsly 9
#8 Hewitt Donald H 9
#9 Trace Leslie George 8
#10 Ernest Wakeford Leslie 6

Latest patents

Publication Filing date Title
GB867962A Improvements in or relating to apparatus for dispensing liquids
GB867963A Improvements in or relating to metering dispensing devices
GB841235A Improvements in or relating to paint-dispensing machines
GB848380A Improvements in or relating to tinting compositions for paints and like coating compositions
IE23448L Coating with polyester resins
IE23356L Copolymers;coatings
IE23310L Alkyd resins
ES233885A1 Procedure for obtaining alkydic resins in water (Machine-translation by Google Translate, not legally binding)
GB857514A Improvements in or relating to the production of emulsion polymers and aqueous mediatherefor
IE22769L Alkyd resins
IE22049L Copolymeric resinous coatings, etc.
GB774868A Improvements in or relating to water-dispersible copolymeric resinous materials
GB802509A Improvements in or relating to multiple roller paint applicators
GB845861A Improvements in or relating to the manufacture of alkyd resins
GB824103A Improvements in or relating to the manufacture of copolymers of epoxide resin esters
GB762439A Improvements in or relating to tinting compositions for paints and like coating compositions
GB767269A Improvements in or relating to mixing machines for dispensing liquids
GB767270A Improvements in or relating to dispensing valves for liquids
GB753417A Improvements in or relating to reciprocating pumps for metering liquids
IE21351L Polyhydric phenol-aldehyde-epihalohydrin resins