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ELECTRO HYDRAULICS LTD

Overview
  • Total Patents
    267
About

ELECTRO HYDRAULICS LTD has a total of 267 patent applications. Its first patent ever was published in 1947. It filed its patents most often in United Kingdom, France and United States. Its main competitors in its focus markets mechanical elements, transport and civil engineering are BRITISH MESSIER LTD, CONST MECANIQUES DE LA VALLEE and CIE GEN EQUIP AERONAUTIQUE.

Patent filings in countries

World map showing ELECTRO HYDRAULICS LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 147
#2 France 48
#3 United States 40
#4 Canada 24
#5 Germany 3
#6 Belgium 2
#7 Spain 2
#8 South Africa 1

Patent filings per year

Chart showing ELECTRO HYDRAULICS LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Perdue Jack 26
#2 Hancock Kenneth George 19
#3 Neilson Christopher Bernard Ve 17
#4 Jack Perdue 12
#5 Lee Roger Demant 10
#6 Harold Robert Edwin 8
#7 Bruce Donald Marsh 7
#8 Vere Neilson Christopher Berna 7
#9 Caldwell Harry Balshaw 7
#10 Worrall Brian 6

Latest patents

Publication Filing date Title
ZA7000954B Vehicle transmission and control systems
GB1222204A Advancing mine roof supports
GB1175097A Retractable Undercarriage for Aircraft
GB1235102A Vehicle transmission and control systems
GB1175735A Aircraft Undercarriage
GB1173051A Aircraft Undercarriages
DE1533726B1 Migrating hydraulic longwall mining
GB1188022A Fluid Control Valves.
GB1196265A Improvements in or relating to Valve Assemblies for Fluid Systems
GB1170246A Improvements in and relating to Mine Roof Supports.
GB1069505A Hydraulic motor control units
GB1079301A Hydraulic servo mechanisms
GB1121086A Fluid pressure operated positioning means
GB1079789A Improvements in or relating to hydraulically operated mine roof supports
GB1116464A Aircraft undercarriages
GB1112154A Mine roof supports
US3361180A Tire deflating control means
GB1125771A Mountings for props
GB1097153A Lifting apparatus
GB1116872A Selector valves