Learn more

JOHN HOGG ROBERTSON

Overview
  • Total Patents
    60
About

JOHN HOGG ROBERTSON has a total of 60 patent applications. Its first patent ever was published in 1918. It filed its patents most often in United Kingdom, Germany and Ireland. Its main competitors in its focus markets mechanical elements, control and thermal processes are MATTEUCCI RAFFAELE, WINDFIELDS 1946 LTD and KUKEN KOGYO CO LTD.

Patent filings in countries

World map showing JOHN HOGG ROBERTSONs patent filings in countries
# Country Total Patents
#1 United Kingdom 43
#2 Germany 6
#3 Ireland 5
#4 Canada 2
#5 France 2
#6 United States 2

Patent filings per year

Chart showing JOHN HOGG ROBERTSONs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Luca Ettore De 2
#2 Robertson John Hogg 2
#3 De Luca Ettore 2

Latest patents

Publication Filing date Title
GB598310A Improvements in heat-exchange apparatus
GB580863A Improvements in heat-exchange apparatus
GB574732A Improvements in and relating to self-locking nuts
GB577114A Improvements in heat-exchange apparatus
GB550418A Improvements in armour-piercing projectiles
GB542427A Improvements in and relating to heating systems for aircraft and the like
GB539600A Improvements in or relating to heating apparatus for liquids or semi-solids
GB518836A Improvements in and relating to self-locking nuts
GB496067A Improvements in aeroplane landing gear
GB497274A Improvements in aeroplanes
GB491731A Improvements in or relating to cooling apparatus for viscous liquids
GB481755A Improvements in oil coolers
GB451293A Improvements in charge coolers for internal combustion engines
GB450984A Improvements in and relating to joints for securing tubes to plates or to tubes
GB442382A Improvements in or relating to the jointing of tubes in plates, walls or the like
GB421909A Improvements in windscreens for automobiles and the like
US1961416A Speed regulating device
US1949145A Synchronous driving device
GB385856A Improvements in speed-regulating devices for electric motors
GB374531A Improvements in observation or sighting apertures for protective shields or armouredvehicles, guns and the like