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ALLEGHENY STEEL CO

Overview
  • Total Patents
    91
About

ALLEGHENY STEEL CO has a total of 91 patent applications. Its first patent ever was published in 1910. It filed its patents most often in United States and Canada. Its main competitors in its focus markets materials and metallurgy, machines and machine tools are ARBED F & G DRAHTWERKE, US AUTOMATION CO and POTTER WINFIELD S.

Patent filings in countries

World map showing ALLEGHENY STEEL COs patent filings in countries
# Country Total Patents
#1 United States 88
#2 Canada 3

Patent filings per year

Chart showing ALLEGHENY STEEL COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Otte Otho M 14
#2 Hostettler Leigh W 10
#3 Browne Vere B 8
#4 Louis Schulte 8
#5 Scharschu Charles A 7
#6 Caugherty William E 5
#7 Kiefer George C 4
#8 Detwiler William F 4
#9 Musheno Fred G 3
#10 Winder Frank J 3

Latest patents

Publication Filing date Title
US2169621A Method and apparatus for annealing metal charges
US2187844A Manufacture of coated strip for tubing production
US2096318A Method of making chromium steel from chromium steel scrap
US2179114A Method of making seamless tubes from columbium containing austenitic chromium nickel alloy steel and product thereof
US2095400A Method for improving steel and steel sheets
US2106227A Surface treatment of metal to prevent localized corrosive attack
US2078681A Shelf structure
US2107187A Method of making grid resistors
US2031733A Electric controller of the variable voltage type
US2084337A Method of rolling magnetic material
US1995562A Magnetic alloy
US2084336A Magnetic material and method of manufacture
US2018085A Method of making flat expanded grilles
US2018405A Dynamo-electric machine and method of making laminations therefor
US2001123A Stable chromium-nickel-iron alloy
US1991352A Process for heat treating silicon steel sheets
US2104169A Nonaging flat silicon steel strip and method of producing the same
US1978222A Method of and apparatus for treating metallic materials
US1978221A Method of and apparatus for treating metallic materials
US1978220A Method of and apparatus for treating metallic materials