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DEWHURST JOHN HENRY

Overview
  • Total Patents
    11
About

DEWHURST JOHN HENRY has a total of 11 patent applications. Its first patent ever was published in 1893. It filed its patents most often in United Kingdom and United States. Its main competitors in its focus markets materials and metallurgy and transport are WILLIAM B POLLOCK COMPANY, URAL ZD TYAZHELOGO MASH and GEORGETOWN STEEL CORP.

Patent filings in countries

World map showing DEWHURST JOHN HENRYs patent filings in countries
# Country Total Patents
#1 United Kingdom 8
#2 United States 3

Patent filings per year

Chart showing DEWHURST JOHN HENRYs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Materials and metallurgy
#2 Transport

Focus technologies

# Technology
#1 Casting metal
#2 Railway bodies
#3 Iron and steel production

Top inventors

# Name Total Patents
#1 Dewhurst John Henry 11
#2 Crowe Henry 1

Latest patents

Publication Filing date Title
GB119301A Improved Method of and Appliances for Stripping Ingots from Ingot Moulds.
US906117A Ladle for carrying and tipping blast-furnace slag.
GB190724195A Improvements in Ladles for Carrying and Tipping Blast Furnace Slag.
GB190708146A Improvements in Blast Furnace Tuyeres.
US740405A Carriage for ladles used for carrying and tipping blast-furnace slag.
GB190218384A Improvements in Carriages for Ladles used for Carrying and Tipping Blast Furnace Slag.
US740404A Ladle for carrying and tipping blast-furnace slag.
GB190200554A Improvements in Ladles for Carrying and Tipping Blast Furnace Slag
GB190014749A Improvements in Slag Ladles and Carriages, and Apparatus and Appliances connected therewith.
GB189730583A Improvements in Ladles and Ladle Carriages.
GB189316338A Improvements in Steam Traps.