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SPERRY LTD

Overview
  • Total Patents
    75
About

SPERRY LTD has a total of 75 patent applications. Its first patent ever was published in 1970. It filed its patents most often in United Kingdom, EPO (European Patent Office) and United States. Its main competitors in its focus markets measurement, mechanical elements and machines are SPERRY RAND LTD, RUEB WINFRIED and PH MATIC GMBH.

Patent filings per year

Chart showing SPERRY LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Roderick Raymond Thomas 5
#2 Read John Ivan 4
#3 Walters Ronald B 3
#4 Meek Nigel William 2
#5 Cusveller John 2
#6 Munro James A 2
#7 Hammond John Anthony Gordon 2
#8 O'Sullivan James P 2
#9 O Sullivan James Peter 2
#10 Priest Carol L 1

Latest patents

Publication Filing date Title
EP0114470A1 Two-stage hydraulic valves
GB8315078D0 Two-stage directional control valves
GB8315079D0 Pilot valves for two-stage hydraulic devices
GB8304686D0 Collision avoidance apparatus
GB2095604A Seal between two components
GB2110304A Rocket motor gas generators
AU1164083A Control valve for a fluid operated piston-cylinder assembly
GB2101326A Verticality sensors
GB2102244A Improvements in telecommunication equipment
GB2098250A Means for attachment to an elongated member
AU8240882A Harvester head flotation
GB2091480A Electrodes for glow discharge devices
GB2091481A Getter for Glow Discharge Devices
GB2088586A Holding films by suction and magnets
AU7592181A Header for combine
DE3031637A1 AGRICULTURAL BALRING PRESS.
EP0024877A1 Electrically modulated valve
GB2056906A Agricultural balers
EP0023416A2 Hydraulic valve
GB2076213A Ring laser gyroscopes