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CRABTREE & CO LTD J A

Overview
  • Total Patents
    400
About

CRABTREE & CO LTD J A has a total of 400 patent applications. Its first patent ever was published in 1936. It filed its patents most often in United Kingdom, United States and France. Its main competitors in its focus markets electrical machinery and energy, audio-visual technology and basic materials chemistry are ZHEJIANG CHINEHOW TECH CO LTD, TUCKER JOHN HENRY and ELEKTROSCHALTGERATE GORLITZ VE.

Patent filings in countries

World map showing CRABTREE & CO LTD J As patent filings in countries
# Country Total Patents
#1 United Kingdom 323
#2 United States 34
#3 France 18
#4 Germany 15
#5 South Africa 5
#6 Austria 3
#7 Denmark 1
#8 Italy 1

Patent filings per year

Chart showing CRABTREE & CO LTD J As patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Guy Wintle Thomas Daniel 16
#2 Coleman Edward 13
#3 Edward Hill Walter 11
#4 Wintle Thomas Daniel Guy 9
#5 Butcher Eric James 9
#6 Ernst Besag 9
#7 Jelley Gordon Albert 6
#8 Besag Ernst 6
#9 Albert Jelley Gordon 6
#10 Alter Siegfried 6

Latest patents

Publication Filing date Title
GB2025712A Electrical fitting
GB2007434A Mounting of circuit breakers
GB1552242A Electric plugs
GB1535782A Moulded plastics component provided with a threaded membe
GB1510959A Manually operated electric switches
GB1510958A Manually operable electric switches
GB1503663A Manually operable electrical switches
GB1503662A Manually operated electrical switches
GB1534278A Electric plugs
GB1552241A Electric plugs
GB1492961A Mounting of electric modules
ZA7500191B Improvements in or relating to electric sockets
GB1496486A Electric plugs
ZA7403402B Improvements relating to electrical connectors
GB1498003A Electric sockets
GB1496485A Electric plugs
GB1487554A Securing of cables to electric plugs and the like
GB1489569A Electric sockets
GB1451954A Locking devices for the operating members of electric circuit breakers or switches
GB1435492A Rocker operated electric switches