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PRESTON JOHN EDWARD

Overview
  • Total Patents
    14
About

PRESTON JOHN EDWARD has a total of 14 patent applications. Its first patent ever was published in 1896. It filed its patents most often in United Kingdom, Canada and United States. Its main competitors in its focus markets electrical machinery and energy and environmental technology are ABEKAWA SEISHI KK, XIAMEN KNANO GRAPHENE TECHNOLOGY CORP LTD and WATERBURY BATTERY COMPANY.

Patent filings in countries

World map showing PRESTON JOHN EDWARDs patent filings in countries
# Country Total Patents
#1 United Kingdom 8
#2 Canada 3
#3 United States 2
#4 Austria 1

Patent filings per year

Chart showing PRESTON JOHN EDWARDs patent filings per year from 1900 to 2020

Focus technologies

# Technology
#1 Batteries
#2 Reduction of greenhouse gas emissions

Top inventors

# Name Total Patents
#1 Preston John Edward 13
#2 Morum William Ernest 1
#3 Simkin Cuthbert 1

Latest patents

Publication Filing date Title
CA194813A Friction drive mechanism
GB107485A Improvements in Galvanic Batteries.
US1213535A Galvanic battery.
GB191319854A Improvements in Galvanic Batteries.
CA143919A Galvanic battery
US1104828A Galvanic battery.
GB190926683A Improvements in Galvanic Batteries.
CA61373A Method of and apparatus for treating refractory ores
GB189706051A Improved Method and Apparatus for Treating Refractory Ores containing Gold, Silver, Nickel, and the like.
GB189623258A Improvements in Primary Electric Batteries.
GB189613076A An Improved Driving Gear for Cycles and the like.
GB189610108A An Improved Driving or Speed Gearing for Cycles and the like.
GB189607315A Improved Amalgamating Apparatus.