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THOS FIRTH AND JOHN BROWN LTD

Overview
  • Total Patents
    24
About

THOS FIRTH AND JOHN BROWN LTD has a total of 24 patent applications. Its first patent ever was published in 1937. It filed its patents most often in Canada and France. Its main competitors in its focus markets materials and metallurgy and surface technology and coating are WUHU ZHENGTU ELECTRONIC TECH CO LTD, CHANGSHU LIONY METALS CO LTD and SUZHOU FEILUN LISI METAL TECH CO LTD.

Patent filings in countries

World map showing THOS FIRTH AND JOHN BROWN LTDs patent filings in countries
# Country Total Patents
#1 Canada 19
#2 France 5

Patent filings per year

Chart showing THOS FIRTH AND JOHN BROWN LTDs patent filings per year from 1900 to 2020

Focus technologies

Top inventors

# Name Total Patents
#1 Sykes Charles 9
#2 Hatfield William Herbert 6
#3 Kirkby Henry W 4
#4 Thornton Alfred Everett 2
#5 Kirby Henry W 2
#6 Morley John I 2
#7 Halsbury The Earl Of 1
#8 Barber John Harry 1
#9 Everett Samuel James 1
#10 Hardwick Donald 1

Latest patents

Publication Filing date Title
CA562040A Austenitic steels
CA377706A Alloy steel
CA562039A Austenitic steels
CA482823A Austenitic alloy steels
CA478320A Alloy steels for use at elevated temperatures
CA563828A Martensitic stainless steels
CA585615A Martensitic stainless steels
CA371925A Metal hardness testing device
CA522863A Ferritic alloy steels
CA532727A Ferritic creep-resisting steels
CA376583A Anticorrosion alloy steel
CA364595A Fine wire and strip production
CA337662A Steel hardening process
CA732553A Alloy steels
CA388076A Alloy steel
CA327460A Steam superheater tube
CA477633A Manufacture of discs, wheels and like articles from metals that are difficult to forge
CA331117A Chemical apparatus alloy
CA543290A Welded joint structure