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HAVILLAND ENGINE CO LTD

Overview
  • Total Patents
    229
About

HAVILLAND ENGINE CO LTD has a total of 229 patent applications. Its first patent ever was published in 1946. It filed its patents most often in United Kingdom, France and Canada. Its main competitors in its focus markets engines, pumps and turbines, environmental technology and machines are HAVILLAND ENGINE COMPANY LIMIT, ENTWICKLUNGSBAU PIRNA VEB and BRISTOL SIDDELEY ENGINES LTD.

Patent filings in countries

World map showing HAVILLAND ENGINE CO LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 86
#2 France 58
#3 Canada 46
#4 United States 34
#5 Germany 5

Patent filings per year

Chart showing HAVILLAND ENGINE CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Halford Frank B 28
#2 Halford Frank Bernard 22
#3 Bernard Halford Frank 14
#4 Bell Francis Robert 13
#5 Cleaver Arthur Valentine 9
#6 Preece George Edward 8
#7 Cockburn David M 7
#8 Valentine Cleaver Arthur 6
#9 Cleaver Arthur V 6
#10 Clarke George F 6

Latest patents

Publication Filing date Title
GB961380A Dynamometer system
GB969371A Control fans
GB976854A Aircraft propulsion apparatus
US3083702A Internal combustion engines
GB938303A Variable ratio and/or reversing gearing
GB933890A Turbine or compressor blades and methods of making them
US3099339A Uni-directional driving devices
US3099134A Combustion chambers
GB938480A Methods and apparatus for separating parts of assemblies
GB927030A System including two or more prime movers for driving a common load
GB944868A Apparatus for adjusting control members of axial flow machines
GB922241A Uni-directional driving devices
DE1144411B Reactor core for nuclear reactors
US3035878A Flexible supporting arrangement for rotating members
US3035875A Cooling of rotary components
GB968503A Torquemeter
GB899213A Combustion chambers
US3068372A Eddy-current braking apparatus
GB905664A Power plant including a gas turbine
GB962152A Differential transmission devices for driving two contra-rotating shafts