Learn more

METCALFE JAMES

Overview
  • Total Patents
    26
About

METCALFE JAMES has a total of 26 patent applications. Its first patent ever was published in 1898. It filed its patents most often in United Kingdom, Canada and Austria. Its main competitors in its focus markets transport and engines, pumps and turbines are HARRY EDWARD GRESHAM, GRESHAM & CRAVEN LTD and GRESHAM HARRY EDWARD.

Patent filings in countries

World map showing METCALFE JAMESs patent filings in countries
# Country Total Patents
#1 United Kingdom 16
#2 Canada 4
#3 Austria 3
#4 Australia 1
#5 Switzerland 1
#6 United States 1

Patent filings per year

Chart showing METCALFE JAMESs patent filings per year from 1900 to 2020

Focus industries

Focus technologies

Top inventors

# Name Total Patents
#1 Metcalfe James 26
#2 Metcalfe Richard David 22
#3 Metcalfe James Croxon 20
#4 James Croxon Metcalfe 1
#5 Richard David Metcalfe 1
#6 Metcalfe Jas Croxon 1

Latest patents

Publication Filing date Title
CA164367A Injector
AU1391614B Improvements relating to injectors
GB191313611A Improvements in Injectors.
GB191300805A Improvements relating to Ejectors.
GB191223146A Improvements relating to Ejectors for Vacuum Brake Apparatus of Railway and like Vehicles.
GB191211322A Improvements in the Steam Sanding Arrangements of Locomotives and like Vehicles.
GB190927802A Improvements in Ejectors for Vacuum Brake Apparatus of Railway and like Vehicles.
GB190907294A Improvements in Ejectors for Vacuum Brake Apparatus of Railway and like Vehicles.
US944455A Injector.
CA116950A Injector
GB190825367A Improvements in Steam Generators.
GB190811124A Improvements in and relating to Injectors.
GB190802133A Improvements relating to Injectors.
GB190715426A Improvements relating to Injectors.
GB190611461A Improvements relating to Feed Water Heaters.
GB190306171A Improvements in Injectors.
GB189821080A Improvements in Valves Used in Connection and in Combination with Exhaust and Exhaust and Supplementary Live Steam Injectors and for other purposes.
GB189802424A Improvements in or applicable to Filters or Filtering Arrangements to be used more especially for the Feed Water supplied to Locomotive and other Steam Boilers or Generators.
CA198401A Injector
CA198402A Injector