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HOBSON LTD H M

Overview
  • Total Patents
    394
About

HOBSON LTD H M has a total of 394 patent applications. Its first patent ever was published in 1919. It filed its patents most often in United Kingdom, United States and France. Its main competitors in its focus markets transport, mechanical elements and engines, pumps and turbines are GOODRICH ACTUATION SYSTEMS SAS, CYRIL DANIEL WATSON and CIE GEN EQUIP AERONAUTIQUE.

Patent filings in countries

World map showing HOBSON LTD H Ms patent filings in countries
# Country Total Patents
#1 United Kingdom 155
#2 United States 89
#3 France 66
#4 Germany 48
#5 Canada 29
#6 Sweden 4
#7 Switzerland 2
#8 Denmark 1

Patent filings per year

Chart showing HOBSON LTD H Ms patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Westbury Roy 46
#2 Roy Westbury 24
#3 Smith Charles Philip 23
#4 Mccourty William Donald 23
#5 Sidney Greenland Leonard 22
#6 Greenland Leonard Sidney 21
#7 Philip Smith Charles 17
#8 Glaze Stanley George 15
#9 Smith Charles P 13
#10 Marshall David 13

Latest patents

Publication Filing date Title
US3727958A Self-locking coupling
US3712148A Ball screw jack
US3714784A Fuel supply systems for jet aircraft engines
US3655134A Jet engines for aircraft
DE2040574A1 Fuel supply system for a gas turbine
DE2040575A1 Device for keeping a flow constant in a line
DE2039174A1 Freewheel device
DE2039175A1 Brake for a hydraulically driven shaft
US3643428A Fuel control system for a gas turbine engine
US3638672A Valves
US3610379A Double-acting freewheel for the protection of hydraulic motors
US3631944A Plural drive with differential brakes
US3635242A Valve seizure protection devices
US3640092A Torque limiter
US3653226A Bi-directional torque limiters
US3692260A Damping devices
GB1283483A An improved ball screw jack
GB1293672A Improvements in fuel supply systems for aircraft gas turbine jet engines
GB1271260A Overheat detector
GB1272859A Improvements in position control servo systems