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HOPKINSON & CO LTD J

Overview
  • Total Patents
    29
About

HOPKINSON & CO LTD J has a total of 29 patent applications. Its first patent ever was published in 1897. It filed its patents most often in United Kingdom, Austria and United States. Its main competitors in its focus markets mechanical elements, machines and transport are PENTAIR FLOW CONTROL AG, LB BENTLEY LTD and AUDLEY ENGINEERING CO LTD.

Patent filings in countries

World map showing HOPKINSON & CO LTD Js patent filings in countries
# Country Total Patents
#1 United Kingdom 26
#2 Austria 2
#3 United States 1

Patent filings per year

Chart showing HOPKINSON & CO LTD Js patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Mechanical elements
#2 Machines
#3 Transport

Top inventors

# Name Total Patents
#1 Kilburn Richard 1
#2 Hopkinson Joseph 1

Latest patents

Publication Filing date Title
GB129955A Improvements in Stop Valves.
GB191502064A Improvements in Stop Valves.
GB191412711A Improvements relating to Valve Seats.
GB191326450A Improvements in Stop-valves or Cocks.
GB191326346A Improvements in Ball Stop Valves.
GB190900777A Improvements in Stop Valves.
GB190821750A Improvements relating to Isolating or Check Valves.
GB190815550A Improvements in Check Valves.
GB190812635A Improvements in Double Beat or Equilibrium Valves.
US887638A Stop-valve.
GB190710607A Improvements in Steam Traps.
GB190706297A Improvements in Try Cocks for the Water Gauges of Steam Boilers and the like.
GB190627450A Improvements in Stop Valves.
GB190622805A Improvements in Stop Valves.
GB190615396A Improvements in and relating to Self-closing Valves
GB190615399A Improvements in Stop Valves.
GB190608268A Improvements relating to Safety Valves.
GB190606391A Improvements in Automatic Check Valves.
GB190522909A Improvements in Parallel Slide Stop Valves.
GB190510589A Improvements in Stop Valves