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W H BARKER & SON ENGINEERS LTD

Overview
  • Total Patents
    45
About

W H BARKER & SON ENGINEERS LTD has a total of 45 patent applications. Its first patent ever was published in 1939. It filed its patents most often in United Kingdom, Germany and France. Its main competitors in its focus markets packaging and shipping, chemical engineering and transport are ARMSTRONG GAVIN CAMPBELL, POWERSCREEN INT DISTRIBUTION and WILLIAM HENRY BARKER.

Patent filings in countries

World map showing W H BARKER & SON ENGINEERS LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 43
#2 Germany 1
#3 France 1

Patent filings per year

Chart showing W H BARKER & SON ENGINEERS LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Barker Wilfred 36
#2 Barker William Norman 10
#3 Webberley James 1
#4 Moore John 1
#5 Grady Gordon 1
#6 Davies John Francis Dennis 1

Latest patents

Publication Filing date Title
GB9723874D0 Fence assembly
GB9624720D0 Fence assembly
GB1062786A Sorting screens
GB1077670A Reciprocatory sereens and conveyors
GB1019537A Mineral sorting screens or conveyors
GB1026605A Apparatus for loading mine cars and like vehicles
GB1034372A Apparatus for loading mine cars and like vehicles
GB1009567A Mechanical creepers for use with mine cars and the like
GB981650A Apparatus for handling bulk material
GB1043281A Surge bunkers
GB1034659A Apparatus for loading mine cars or like vehicles
GB980650A Stop means for mine cars and like rail vehicles
GB951129A Mineral sorting screens or conveyors
GB930560A Chain-type conveyors
GB867131A Turntables for use in colliery or other like rail track systems
GB878079A Rotary turntables
GB859148A Retarder chains for mine or other like cars
GB852168A Safety devices for use with pit-cage winding machinery
GB852080A Mine car tipplers
GB842273A Chutes for coal or other tipplers