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ALLEGHENY LUDLUM CORP

Overview
  • Total Patents
    391
About

ALLEGHENY LUDLUM CORP has a total of 391 patent applications. Its first patent ever was published in 1973. It filed its patents most often in Canada, United States and EPO (European Patent Office). Its main competitors in its focus markets materials and metallurgy, environmental technology and surface technology and coating are ALLEGHENY INT INC, EBG ELEKTROMAGNET WERKSTOFFE and ARMCO INT CORP.

Patent filings per year

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

Top inventors

# Name Total Patents
#1 Kim Yeong-U 27
#2 Larsen James Martin 22
#3 Franson Ivan Anders 15
#4 Sorace Dominic Alfred 15
#5 Schwaha Karl 13
#6 Ames Stuart Leslie 13
#7 Zaremski Donald Raymond 12
#8 Burk David Lawrence 11
#9 Breznak Jeffrey M 11
#10 Breznak Jeffrey Michael 11

Latest patents

Publication Filing date Title
WO9932682A1 Austenitic stainless steel including columbium
US6036917A Corrosion resistant austenitic stainless steel
US5894255A Electromechanical relay
US5980662A Method for batch annealing of austenitic stainless steels
CN1161378A Process for producing dual phase ferritic stainless steel strip
US5887645A Method and apparatus for continuous casting with speed synchronization
US5843246A Process for producing dual phase ferritic stainless steel strip
US5904315A Expansion sleeve
CA2157741A1 Method for applying aluminum coating to fabricated catalytic exhaust system component
US5716143A Spherical plain bearing
SG32398A1 Annealing and descaling method for stainless steel
US5588321A Segmented scribing roller for refining the domain structure of electrical steels by local mechanical deformation
US5749140A Ballistic resistant metal armor plate
US5483811A Segmented anvil roller for refining the domain structure of electrical steels
US5463889A Segmented scribing roller for refining the domain structure of electrical steels by local mechanical deformation
AU1134095A Creep-resistant iron-chromium-aluminum alloy substantially free of molybdenum
AU1133995A Creep resistant iron-chromium-aluminum alloy and article thereof
US5490908A Annealing and descaling method for stainless steel
US5405464A Riders for the processing of steel and method for using
TW323971B Method and apparatus for direct casting of a continuous steel rod