Learn more

WHITFIELD CHARLES

Overview
  • Total Patents
    45
About

WHITFIELD CHARLES has a total of 45 patent applications. Its first patent ever was published in 1893. It filed its patents most often in United Kingdom, Canada and United States. Its main competitors in its focus markets basic materials chemistry, machines and machine tools are OTTO HUBMANN, YOUNG WHITWELL GAS PROCESS COM and CHAPMAN ENGINEERING COMPANY.

Patent filings in countries

World map showing WHITFIELD CHARLESs patent filings in countries
# Country Total Patents
#1 United Kingdom 21
#2 Canada 9
#3 United States 7
#4 Spain 4
#5 Switzerland 1
#6 Germany 1
#7 Denmark 1
#8 France 1

Patent filings per year

Chart showing WHITFIELD CHARLESs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Whitfield Charles 40
#2 Chas Gust Norris 1
#3 Charles Whitfield 1
#4 Wile Julius Isaac 1
#5 Guest Norris Charles 1

Latest patents

Publication Filing date Title
ES118831A1 Improvements in gas producing appliances and the like.
GB106121A Improved Process and Apparatus for Carbonising Peat and other Materials and Simultaneously Obtaining Distillates therefrom.
GB103911A Improvements in Tool Holders.
CA155533A Gas producer
US1096774A Gas-producer.
GB191301117A Improvements in Gas Producers.
GB191301118A Improvements in Gas Washers or Tar Extractors.
GB191018143A Improvements in Gas Producers.
GB191009558A Improvements in Tool Holders.
GB191008577A Improvements in Mechanical Potato Diggers.
GB190915520A Improvements in Liquid Fuel Burners.
GB190907974A Improvements in Agricultural Rick Carts.
GB190723679A Improvements in or relating to Power Gas Producing Plant.
GB190514371A A New or Improved Driving-mechanism for Centrifugal Blowers or Fans.
CA95644A Suction gas for produce plants
US883845A Gas-producer plant.
CA96135A Apparatus for making gas from peat
GB190504917A Improvements in Suction Gas Producer Plant.
US795874A Apparatus for the manufacture of combustible gas from peat.
GB190409608A Improvements in or relating to Gas Producer Plant.