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BARKER JOHN CHARLES

Overview
  • Total Patents
    26
About

BARKER JOHN CHARLES has a total of 26 patent applications. Its first patent ever was published in 1898. It filed its patents most often in United Kingdom, United States and Canada. Its main competitors in its focus markets transport, machines and materials and metallurgy are HOLTE BJARNE, HUANG TENG-WEN and MCCONKIE HOWARD S.

Patent filings in countries

World map showing BARKER JOHN CHARLESs patent filings in countries
# Country Total Patents
#1 United Kingdom 8
#2 United States 7
#3 Canada 5
#4 Spain 3
#5 Austria 2
#6 Switzerland 1

Patent filings per year

Chart showing BARKER JOHN CHARLESs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Barker John Charles 22
#2 John Charles Barker 1

Latest patents

Publication Filing date Title
GB9626110D0 Float operated flow control valve
CA181362A Pneumatic tire
US1244447A Pneumatic tire.
GB191517449A Improvements in Pneumatic Tyres.
US1021816A Outer cover for pneumatic tires.
US1004344A Outer cover of pneumatic tires.
GB191024300A Improvements in or in connection with Pneumatic Tyres.
GB191015474A An Improved Outer Cover for Pneumatic Tyres.
CA126886A Pneumatic tire
US1004343A Pneumatic tire.
GB191002471A Improvements in or in connection with Pneumatic Tyres.
CA127291A Furnace for melting metal
US948126A Furnace for melting metals and for like purposes.
GB190911969A Improvements in or in connection with Pneumatic Tyres.
US927477A Tire.
GB190802736A Improvements in the Construction of Tyres for Wheels of Vehicles, Motor Cars and the like.
CA97114A Water filter
US794840A Water-filtering apparatus.
GB189807810A Improvements in Smoking Pipes, Cigar Holders, and the like.
CA217584A Divisible wheel rim