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JOEL HENRY FRANCIS

Overview
  • Total Patents
    50
About

JOEL HENRY FRANCIS has a total of 50 patent applications. Its first patent ever was published in 1882. It filed its patents most often in United Kingdom, United States and Canada. Its main competitors in its focus markets electrical machinery and energy, environmental technology and materials and metallurgy are FRENCH BATTERY & CARBON CO, OLDHAM & SON LTD and ORLANDO OLDHAM.

Patent filings in countries

World map showing JOEL HENRY FRANCISs patent filings in countries
# Country Total Patents
#1 United Kingdom 37
#2 United States 6
#3 Canada 3
#4 Spain 3
#5 Austria 1

Patent filings per year

Chart showing JOEL HENRY FRANCISs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Joel Henry Francis 47
#2 Fletcher Frank Purser 1
#3 Taylor Joseph 1
#4 Fanta Ferdinand 1
#5 Mawdsley John Herbert St Hill 1
#6 Stretch Innes Mccaul 1

Latest patents

Publication Filing date Title
GB136282A Improvements in Electric Accumlators.
GB123701A Improvements in the Moulds and Method of Casting Grids for Accumulator Electrodes.
GB123110A Improvements in Electric Accumulators.
GB112655A Improvements in Dynamo Electric Machines.
GB105100A Improvements in Portable Electric Battery Lamps.
GB104535A Improvements in Dynamo Electric Machinery.
GB191505240A Improvements in Joints of Pipes and Couplings applicable to Electrical Conduit Fittings and like purposes.
GB191501525A Improvements in Construction of Electric Batteries.
GB191423189A Improvements in Apparatus for Charging Electric Accumulators.
GB191302269A Improvements in Electrodes for Electric Accumulators.
GB191224443A Improvements in Cases applicable for Electric Batteries, Preserving Food, and other purposes.
GB191305073A Improvements in Portable Electric Battery Lamps.
GB191205170A Improvements in Portable Electric Battery Lamps.
GB191204974A Improvements in Electrically Operated Means or Devices for Exhibiting Advertisements, Pictures, Notices or the like.
GB191106257A Improvements in Apparatus for Generating Electricity on Motor Driven Vehicles and the like.
GB191104019A Improvements in Electric Connections and Switch Control.
GB191020891A Improvements in Vent Plugs.
GB191003185A Improvements in Portable Electric Battery Lamps.
GB190929511A Improvements in Separators of Electrodes in Galvanic Batteries.
US916320A Secondary battery.