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HALL HARDING LTD

Overview
  • Total Patents
    81
About

HALL HARDING LTD has a total of 81 patent applications. Its first patent ever was published in 1943. It filed its patents most often in United Kingdom, France and Canada. Its main competitors in its focus markets optics, textiles and paper and consumer goods are HALDEN & COMPANY LTD J, HALDEN & CO LTD J and NIG MFG COMPANY LTD.

Patent filings in countries

World map showing HALL HARDING LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 40
#2 France 21
#3 Canada 6
#4 United States 6
#5 Germany 4
#6 Switzerland 2
#7 Denmark 1
#8 Spain 1

Patent filings per year

Chart showing HALL HARDING LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Bungay Jeffery Arthur 11
#2 Moon William Richard Harding 11
#3 Lyons Stanley Lewis 7
#4 Bungay Jeffery A 4
#5 Arthur Bungay Jeffery 3
#6 Mustacchi Henry 2
#7 Stone James Bryan 2
#8 Leuch Werner Paul 2
#9 Figov Murray 2
#10 Stanley Lewis Lyons 1

Latest patents

Publication Filing date Title
US3430321A Means for assembling together in coaxial relation two parts of different diameter
GB1110130A Improvements in or relating to ammonia tanks for use in developing diazo sensitised material
GB1080576A Improvements in or relating to diazotype materials
GB1110317A Finger guide for laminar material endless conveying systems
GB1108479A A coaxial assembly of a tube, a shaft and a plug
GB1094126A Method and apparatus for collating and sorting sheets of laminar material
GB1080539A Reflex copying process
GB1108553A Apparatus for separating sheet material
US3280717A Photographic developing machines
GB1079231A Improvements in or relating to photographic reproducing apparatus
GB1103582A Improvements in or relating to photographic developing machines
GB1033893A Improvements in or relating to photographic developing machines
GB1036572A Improvements in or relating to translucent paper
US3136237A Photographic printing and developing apparatus
GB1009468A Improvements in or relating to photographic apparatus
GB924952A Improvements in straight edges
GB978556A Improvements in photographic printing and developing apparatus
GB858241A Drawing office appliances
GB828085A A combined scale and scale support for a drafting machine
GB847358A Improvements in or relating to drawing office appliances