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PLESSEY UK LTD

Overview
  • Total Patents
    347
About

PLESSEY UK LTD has a total of 347 patent applications. Its first patent ever was published in 1960. It filed its patents most often in United Kingdom, France and United States. Its main competitors in its focus markets electrical machinery and energy, mechanical elements and semiconductors are PLESSEY CO LTD, PLESSEY COMPANY UK LTD and ITT.

Patent filings in countries

World map showing PLESSEY UK LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 196
#2 France 46
#3 United States 39
#4 Germany 24
#5 Canada 17
#6 Sweden 11
#7 Denmark 5
#8 Norway 3
#9 Austria 2
#10 Spain 2
#11 Belgium 1
#12 Switzerland 1

Patent filings per year

Chart showing PLESSEY UK LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Moss Norman 9
#2 Chandler Walter 8
#3 Oldfield Thomas Alfred 6
#4 Jones Alan 6
#5 Acton John Reginald 6
#6 Kahn Peter Bruno 5
#7 Matthews Robert Barry 5
#8 Wray Ronald James 4
#9 King Henry Vernon 4
#10 Cockbain Alan Gray 4

Latest patents

Publication Filing date Title
GB1136084A Improvements in or relating to tape recorders
US3277353A Variable capacitor
US3348454A Actuating arrangements
GB1129391A Improvements relating to rotary switch constructions
GB1137261A Improvements relating to electric switch assemblies
GB1135765A Improvements relating to electric motors
GB1138614A Improvements in or relating to flexible joints
GB1129091A Improvements in or relating to crank arms for linkages
GB1144121A Improvements relating to equipment housings
GB1130701A Improvements in or relating to scale indicating means
GB1129087A Improvements in or relating to fuel control systems for combustion engines
GB1135032A Improvements relating to electrically operated indicators
GB1085064A Apparatus for producing mechanical shocks
GB1135041A Improvements in or relating to machines for detecting a magnetic or a conductive deposit on a carrier
GB1137915A Improvements in or relating to light detectors
GB1124061A Improvements relating to communication equipment
GB1133994A Improvements relating to visual display apparatus
GB1140461A Improvements relating to electric switching arrangements
GB1120633A Improvements in or relating to electrical connectors
GB1136076A Improvements in or relating to encapsulating a component