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HEAD WRIGHTSON & CO LTD

Overview
  • Total Patents
    287
About

HEAD WRIGHTSON & CO LTD has a total of 287 patent applications. Its first patent ever was published in 1896. It filed its patents most often in United Kingdom, United States and Germany. Its main competitors in its focus markets chemical engineering, machine tools and materials and metallurgy are HEAD, EISENMANN KG MASCHBAU and PREP IND COMBUSTIBLES.

Patent filings in countries

World map showing HEAD WRIGHTSON & CO LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 176
#2 United States 33
#3 Germany 28
#4 Canada 17
#5 France 10
#6 Australia 5
#7 Spain 4
#8 Belgium 3
#9 Sweden 3
#10 South Africa 3
#11 Japan 2
#12 Austria 1
#13 Norway 1
#14 Zambia 1

Patent filings per year

Chart showing HEAD WRIGHTSON & CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Lawson Kenneth Thomas 16
#2 Eveson Geoffrey Frank 14
#3 Richards George Thomas 10
#4 Woolley Eric Maurice 10
#5 Eveson Geoffrey F 9
#6 Rounthwaite Cecil 7
#7 Frank Eveson Geoffrey 7
#8 Richards George T 7
#9 Nofer Jerzy Franciszek 6
#10 Thomas Richards George 6

Latest patents

Publication Filing date Title
US4199155A Sealing means for rotary vessels
GB1546224A Treatment of trimmed edge scrap from strip material
GB1545114A Method and apparatus for producing strip material
GB1517114A Sintering machine
GB1572825A Sealing means for rotary vessels
GB1523494A Method and apparatus for trimming castings or other workpieces
JPS5288272A Method of producing granular solids from liquids or slurries
AU1004876A Producing granular solids
GB1502429A Production of granular solids from slurries or liquids containing solids in solution or suspension
GB1451704A Strip cooling
GB1505068A Method and apparatus for producing a uniform supply of a powdered material
GB1445735A Rotary unions
GB1394083A Drives for bridle rolls
GB1421166A Tunnel or shaft linings
GB1418868A Fluidised bed processing
FR2113654A5 Chromized ferrous metal article - of improved strength and corrosion resistance, having coating obtained by diffusion
CA932646A Fluidised beds
GB1325224A Fluidised beds
US3739495A Apparatus for cooling hot material in bulk
GB1270499A Apparatus for cooling hot material in bulk