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ALLEGHENY LUDLUM STEEL

Overview
  • Total Patents
    1,308
About

ALLEGHENY LUDLUM STEEL has a total of 1,308 patent applications. Its first patent ever was published in 1933. It filed its patents most often in United States, France and Canada. Its main competitors in its focus markets materials and metallurgy, electrical machinery and energy and machines are ALLEGHENY LUDLUM IND INC, USINOR and BAOSHAN AJRON END STIL KO LTD.

Patent filings per year

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

Top inventors

# Name Total Patents
#1 Johns Robert Harvey 48
#2 Nauman John Dana 26
#3 Datta Amitava 23
#4 Aggen George 21
#5 Zaremski Donald R 21
#6 Johns Robert H 21
#7 Mccunn Thomas H 18
#8 Ames Stuart Leslie 17
#9 Miller Robert F 16
#10 Gray Thomas H 16

Latest patents

Publication Filing date Title
CA1278985C Grain-oriented silicon steel and stress coating therefor
AU4652985A Method and apparatus for direct casting of crystalline strip by radiantly cooling
AU4653085A Method and apparatus for continuous casting of crystalline strip
AU4652785A Method and apparatus for direct casting of crystalline strip in non-oxadizing atmosphere
US4615730A Method for refining molten metal bath to control nitrogen
EP0163379A2 Method of welding nitrogen-containing alloys
EP0159796A1 Method for controlling roll deflection
KR850001746Y1 Nozzle in a strip casting apparatus
US4533409A Method and apparatus for reducing core losses of grain-oriented silicon steel
CA1195081A Rapidly cast alloy strip having dissimilar portions
CA1223717A Method of producing stainless steel assemblies and articles thereby
US4568387A Austenitic stainless steel for low temperature service
US4576300A Reusable shipping container
US4545826A Method for producing a weldable austenitic stainless steel in heavy sections
US4582547A Method for improving the annealing separator coating on silicon steel and coating therefor
US4514220A Method for producing steel in a top-blown vessel
US4529442A Method for producing steel in a top oxygen blown vessel
US4529443A System and method for producing steel in a top-blown vessel
US4581073A Method for descaling metal strip
CA1240592A Processing for cube-on-edge oriented silicon steel