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HIGH DUTY ALLOYS LTD

Overview
  • Total Patents
    95
About

HIGH DUTY ALLOYS LTD has a total of 95 patent applications. Its first patent ever was published in 1933. It filed its patents most often in United Kingdom, France and Canada. Its main competitors in its focus markets materials and metallurgy, machine tools and surface technology and coating are MITSUBISHI SHINDOH CO LTD, ALNAN ALUMINIUM INC and LIAONING ZHONGWANG GROUP CO.

Patent filings in countries

World map showing HIGH DUTY ALLOYS LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 51
#2 France 14
#3 Canada 11
#4 Germany 7
#5 United States 5
#6 Switzerland 3
#7 Sweden 2
#8 Denmark 1
#9 Spain 1

Patent filings per year

Chart showing HIGH DUTY ALLOYS LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Doyle William Michael 10
#2 Wilson Clifford 5
#3 Doyle William M 5
#4 Ashton Stanley James 4
#5 Heron John Aherne 3
#6 Michael Doyle William 3
#7 William Michael Doyle 3
#8 Day Frederick George 2
#9 Ashton Stanley J 2
#10 Hanstock Raymond Ford 2

Latest patents

Publication Filing date Title
GB1103370A Improvements in or relating to methods of making posts, posts made thereby, and barriers employing such posts
GB1186161A Improvements in or relating to the Heat Treatment of Aluminium Alloys
GB1129089A Jointing device
GB1089454A Improvements in or relating to aluminium alloys and articles made therefrom
GB1069982A Improvements in or relating to sheets of aluminium alloy and methods of manufacturing same
GB1056068A Improvements in the production of hollow lined articles
GB958336A Ladle
GB834049A Improvements relating to the colouring of aluminium and its alloys
GB717640A Improvements in or relating to electrically conductive joints
GB733669A Improvements relating to rainwater pipes
GB727749A Improvements in or relating to the anodic treatment of aluminium and aluminium alloys
GB717984A Improvements relating to the manufacture of engineering components principally of light alloys
GB695153A Improvements in or relating to the heat treatment of aluminium alloys
GB683088A A method of reducing the residual stresses developed in metal objects by rapidly cooling or quenching them
GB678027A Improvements in or relating to the production of magnesuim base alloys
GB640606A Improvements relating to means for establishing and maintaining a finely-finished surface on the metal flanged ends of bobbins, spools, and the like
GB655482A Improvements relating to the permanent and rigid joining together of contacting or mating parts
GB642390A Forging aluminium alloy
GB619336A Improvements relating to electro-brightening treatment of metals
GB620676A Improvements relating to nickel, cobalt, chromium base alloys