Assignee
ALLEGHENY LUDLUM CORP
US·100 granted patents·1,109 citations·filing 1984–1998
Top patents by PatentIndex Score
100 records- 0195US4796209ARandom inventory systemALLEGHENY LUDLUM CORP·Filed 1986·Granted Jan 3, 1989·101 cites·25 claims
- 0294US4964926AFerritic stainless steelALLEGHENY LUDLUM CORP·Filed 1988·Granted Oct 23, 1990·37 cites·12 claims
- 0386US5286310ALow nickel, copper containing chromium-nickel-manganese-copper-nitrogen austenitic stainless steelALLEGHENY LUDLUM CORP·Filed 1992·Granted Feb 15, 1994·58 cites·16 claims
- 0485US4834808AProducing a weldable, ferritic stainless steel stripALLEGHENY LUDLUM CORP·Filed 1987·Granted May 30, 1989·19 cites·7 claims
- 0584US4715428AMethod and apparatus for direct casting of crystalline strip by radiant coolingALLEGHENY LUDLUM CORP·Filed 1986·Granted Dec 29, 1987·21 cites·3 claims
- 0681US5352304AHigh strength low alloy steelALLEGHENY LUDLUM CORP·Filed 1992·Granted Oct 4, 1994·38 cites·11 claims
- 0774US5749140ABallistic resistant metal armor plateALLEGHENY LUDLUM CORP·Filed 1995·Granted May 12, 1998·39 cites·3 claims
- 0874US4824536AMethod for processing cold-rolled stainless-steel sheet and stripALLEGHENY LUDLUM CORP·Filed 1988·Granted Apr 25, 1989·15 cites·11 claims
- 0973US5123977AMethod and apparatus for refining the domain structure of electrical steels by local hot deformation and product thereofALLEGHENY LUDLUM CORP·Filed 1989·Granted Jun 23, 1992·13 cites·15 claims
- 1073US4919733AMethod for refining magnetic domains of electrical steels to reduce core lossALLEGHENY LUDLUM CORP·Filed 1988·Granted Apr 24, 1990·16 cites·14 claims
- 1171US5101652AInsulating heat retention system and methodALLEGHENY LUDLUM CORP·Filed 1990·Granted Apr 7, 1992·18 cites·37 claims
- 1270US5904315AExpansion sleeveALLEGHENY LUDLUM CORP·Filed 1995·Granted May 18, 1999·23 cites·12 claims
- 1370US5080326AMethod and apparatus for refining the domain structure of electrical steels by local hot deformation and product thereofALLEGHENY LUDLUM CORP·Filed 1991·Granted Jan 14, 1992·15 cites·5 claims
- 1470US4964922AMethod for domain refinement of oriented silicon steel by low pressure abrasion scribingALLEGHENY LUDLUM CORP·Filed 1989·Granted Oct 23, 1990·12 cites·10 claims
- 1569US5716143ASpherical plain bearingALLEGHENY LUDLUM CORP·Filed 1995·Granted Feb 10, 1998·33 cites·8 claims
- 1667US4915750AMethod for providing heat resistant domain refinement of electrical steels to reduce core lossALLEGHENY LUDLUM CORP·Filed 1988·Granted Apr 10, 1990·13 cites·19 claims
- 1767US4728875AMethod and apparatus for monitoring a liquid levelALLEGHENY LUDLUM CORP·Filed 1986·Granted Mar 1, 1988·10 cites·20 claims
- 1864US5083867ASlab surface contour monitorALLEGHENY LUDLUM CORP·Filed 1988·Granted Jan 28, 1992·19 cites·29 claims
- 1964US4695318AMethod of making steelALLEGHENY LUDLUM CORP·Filed 1986·Granted Sep 22, 1987·16 cites·19 claims
- 2063US4717188ACoil protector for "C" hooksALLEGHENY LUDLUM CORP·Filed 1986·Granted Jan 5, 1988·17 cites·5 claims
- 2162US5370749AAmorphous metal alloy stripALLEGHENY LUDLUM CORP·Filed 1992·Granted Dec 6, 1994·15 cites·17 claims
- 2261US4968361AMethod of domain refinement of oriented silicon steel by using flux-printingALLEGHENY LUDLUM CORP·Filed 1989·Granted Nov 6, 1990·10 cites·20 claims
- 2361US4661169AProducing an iron-chromium-aluminum alloy with an adherent textured aluminum oxide surfaceALLEGHENY LUDLUM CORP·Filed 1984·Granted Apr 28, 1987·14 cites·15 claims
- 2460US5894255AElectromechanical relayALLEGHENY LUDLUM CORP·Filed 1998·Granted Apr 13, 1999·24 cites·29 claims
- 2560US4931613AElectrical discharge scribing for improving core loss of grain-oriented silicon steelALLEGHENY LUDLUM CORP·Filed 1988·Granted Jun 5, 1990·16 cites·10 claims
- 2660US4824080AApparatus for introducing gas into molten metal bathsALLEGHENY LUDLUM CORP·Filed 1988·Granted Apr 25, 1989·12 cites·3 claims
- 2760US4758269AMethod and apparatus for introducing gas into molten metal bathsALLEGHENY LUDLUM CORP·Filed 1987·Granted Jul 19, 1988·12 cites·3 claims
- 2860US4711113AApparatus for reducing core losses of grain-oriented silicon steelALLEGHENY LUDLUM CORP·Filed 1986·Granted Dec 8, 1987·14 cites·2 claims
- 2960US4678719AMethod and apparatus for continuous casting of crystalline stripALLEGHENY LUDLUM CORP·Filed 1986·Granted Jul 7, 1987·19 cites·29 claims
- 3059US5483811ASegmented anvil roller for refining the domain structure of electrical steelsALLEGHENY LUDLUM CORP·Filed 1995·Granted Jan 16, 1996·11 cites·8 claims
- 3159US4919465AProtector for "C" hooksALLEGHENY LUDLUM CORP·Filed 1988·Granted Apr 24, 1990·20 cites·10 claims
- 3259US4871402ASeparating-agent composition and method using sameALLEGHENY LUDLUM CORP·Filed 1988·Granted Oct 3, 1989·9 cites·11 claims
- 3358US4953177AMethod and means of reducing the oxidization of reactive elements in an electroslag remelting operationALLEGHENY LUDLUM CORP·Filed 1989·Granted Aug 28, 1990·10 cites·39 claims
- 3458US4911886AAustentitic stainless steelALLEGHENY LUDLUM CORP·Filed 1988·Granted Mar 27, 1990·12 cites·17 claims
- 3558US4784419ACoil protector for "C" hooksALLEGHENY LUDLUM CORP·Filed 1988·Granted Nov 15, 1988·16 cites·7 claims
- 3657US4891489AShield cup protector apparatus for plasma arc torchALLEGHENY LUDLUM CORP·Filed 1988·Granted Jan 2, 1990·20 cites·4 claims
- 3755US4948675ASeparating-agent coatings on silicon steelALLEGHENY LUDLUM CORP·Filed 1989·Granted Aug 14, 1990·8 cites·3 claims
- 3855US4778155APlasma arc hole cutterALLEGHENY LUDLUM CORP·Filed 1987·Granted Oct 18, 1988·17 cites·6 claims
- 3953US5312496ASkin pass rolling of mechanically scribed silicon steelALLEGHENY LUDLUM CORP·Filed 1992·Granted May 17, 1994·8 cites·11 claims
- 4053US4938459AMechanically sealed tuyere blockALLEGHENY LUDLUM CORP·Filed 1989·Granted Jul 3, 1990·7 cites·16 claims
- 4152US5463889ASegmented scribing roller for refining the domain structure of electrical steels by local mechanical deformationALLEGHENY LUDLUM CORP·Filed 1995·Granted Nov 7, 1995·7 cites·22 claims
- 4251US4781769ASeparating-agent composition and method using sameALLEGHENY LUDLUM CORP·Filed 1986·Granted Nov 1, 1988·7 cites·8 claims
- 4350US4904313AMethod of producing stable magnetic domain refinement of electrical steels by metallic contaminantsALLEGHENY LUDLUM CORP·Filed 1988·Granted Feb 27, 1990·6 cites·10 claims
- 4450US4858327AApparatus for determining an edge profile of a metallic workpieceALLEGHENY LUDLUM CORP·Filed 1987·Granted Aug 22, 1989·6 cites·10 claims
- 4549US4780155ACapacitive electrical discharge scribing for improving core loss of grain-oriented silicon steelALLEGHENY LUDLUM CORP·Filed 1987·Granted Oct 25, 1988·7 cites·6 claims
- 4648US4769089AMethod of annealing an aperture shadow mask for a color cathode ray tubeALLEGHENY LUDLUM CORP·Filed 1987·Granted Sep 6, 1988·6 cites·9 claims
- 4747US5490908AAnnealing and descaling method for stainless steelALLEGHENY LUDLUM CORP·Filed 1994·Granted Feb 13, 1996·9 cites·10 claims
- 4847US5131573AMethod and device for shrouding a stream of molten metalALLEGHENY LUDLUM CORP·Filed 1991·Granted Jul 21, 1992·7 cites·29 claims
- 4946US5055362APressurize-bonded composite materialALLEGHENY LUDLUM CORP·Filed 1989·Granted Oct 8, 1991·13 cites·5 claims
- 5045US5103662ATandem rolling mill tension control with speed ratio error discriminationALLEGHENY LUDLUM CORP·Filed 1990·Granted Apr 14, 1992·14 cites·6 claims
Showing the top 50 of 100 patent records by PatentIndex Score.
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