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ALLEGHENY LUDLUM IND INC

Overview
  • Total Patents
    1,025
About

ALLEGHENY LUDLUM IND INC has a total of 1,025 patent applications. Its first patent ever was published in 1962. It filed its patents most often in United States, United Kingdom and Japan. Its main competitors in its focus markets materials and metallurgy, surface technology and coating and electrical machinery and energy are ALLEGHENY LUDLUM STEEL, BAOSHAN AJRON END STIL KO LTD and EBG ELEKTROMAGNET WERKSTOFFE.

Patent filings per year

Chart showing ALLEGHENY LUDLUM IND INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Ramachandran S 25
#2 Datta Amitava 20
#3 Ramachandran Sundaresan 17
#4 Datta A 16
#5 Malagari F 14
#6 Malagari Frank Angelo Jr 13
#7 Salsgiver James Allen 12
#8 Southern Raymond L 11
#9 Malagari Frank A 11
#10 Miller C 11

Latest patents

Publication Filing date Title
YU97181A Device for casting bands
JPS57114615A Production of silicon iron plate material
SU1082330A3 Coating for electromagnetic steel
US4231818A Methods of producing silicon steel strip
AU4713079A Protecting austenitic stainless steel from stress corrosion cracking
AU4712979A Protecting ferritic stainless steel from crevice and pitting corrosion
AU4688979A Electrolytic base coating
US4213804A Processing for cube-on-edge oriented silicon steel
US4238122A Apparatus for annealing steel
AU4406679A Welding and post heat treatment of silicon steel
US4217150A Corrosion resistant austenitic steel
US4217136A Corrosion resistant austenitic stainless steel
US4239263A Spherical connector having integrally formed outlets
US4211042A Controlled weld area grinding to prevent the initiation of intergranular corrosion
GB2034856A Connector for tubular structures
US4161398A Method for electroslag remelting of a copper-nickel alloy
US4161399A Method for electroslag remelting of a manganese-copper-nickel alloy
US4167426A Method for annealing silicon steel
US4157925A Texture annealing silicon steel
US4200477A Processing for electromagnetic silicon steel