Allegheny Ludlum Corporation

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C22C ALLOYS 468
 
  
 
C21D MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS 243
 
  
 
B05D PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL 186
 
  
 
B21C MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL120
 
  
 
B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM1156
 
  
 
F16C SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OF CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS 169
 
  
 
F41H ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL128
 
  
 
G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS198
 
  
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 1205
 
  
 
H01H ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES 193

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6296948 Amorphous metal alloy strip and method of making such stripFeb 17, 81Oct 02, 01[B21C]
6036917 Corrosion resistant austenitic stainless steelDec 17, 98Mar 14, 00[C22C]
5980662 Method for batch annealing of austenitic stainless steelsApr 22, 97Nov 09, 99[C21D]
5894255 Electromechanical relayMay 06, 98Apr 13, 99[H01H]
5749140 Ballistic resistant metal armor plateMar 06, 95May 12, 98[F41H, C22C]
5716143 Spherical plain bearingJul 12, 95Feb 10, 98[F16C]
5529644 Stainless steel and carbon steel composite and method of producing the sameMay 30, 95Jun 25, 96[C21D]
5370749 Amorphous metal alloy stripJul 30, 92Dec 06, 94[C22C]
5370946 Stainless steel and carbon steel compositeMar 31, 93Dec 06, 94[B32B]
5286310 Low nickel, copper containing chromium-nickel-manganese-copper-nitrogen austenitic stainless steelOct 13, 92Feb 15, 94[C22C]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5904315 Expansion sleeveExpiredNov 09, 95May 18, 99[B65H]
5887645 Method and apparatus for continuous casting with speed synchronizationExpiredNov 08, 96Mar 30, 99[B22D]
5843246 Process for producing dual phase ferritic stainless steel stripExpiredJan 16, 96Dec 01, 98[C21D]
5590559 Method and apparatus for domain refining electrical steels by local mechanical deformation with multiple scribing rollsExpiredJan 27, 95Jan 07, 97[B21B]
5588321 Segmented scribing roller for refining the domain structure of electrical steels by local mechanical deformationExpiredJun 26, 95Dec 31, 96[B21B]
5490908 Annealing and descaling method for stainless steelExpiredJul 11, 94Feb 13, 96[C25F]
5483811 Segmented anvil roller for refining the domain structure of electrical steelsExpiredJan 25, 95Jan 16, 96[B21B]
5484009 Method and apparatus for direct casting of continuous metal stripExpiredJun 09, 94Jan 16, 96[B22D]
5463889 Segmented scribing roller for refining the domain structure of electrical steels by local mechanical deformationExpiredJan 25, 95Nov 07, 95[B21B]
5415382 Apparatus for separating slag and nonmetallic particles during molten metal teeming operationsExpiredDec 20, 93May 16, 95[C22B]
5408856 Apparatus for domain refining electrical steels by local mechanical deformation with multiple scribing rollsExpiredNov 17, 92Apr 25, 95[B21B]
5405464 Riders for the processing of steel and method for usingExpiredJul 06, 93Apr 11, 95[C21B]
5397402 Silicon steel strip having mechanically refined magnetic domain wall spacings and method for producing the sameExpiredJun 01, 94Mar 14, 95[H01F]
5352304 High strength low alloy steelExpiredNov 16, 92Oct 04, 94[C22C]
5350464 Silicon steel strip having mechanically refined magnetic domain wall spacings and method for producing the sameExpiredNov 17, 92Sep 27, 94[H01F]
5332416 Method for separating slag and nonmetallic particles during molten metal teeming operations using meltable damExpiredApr 23, 92Jul 26, 94[C22B]
5327083 Method and apparatus using magnetic flux scanning to test grain structure of magnetic sheet materialExpiredMar 19, 92Jul 05, 94[G01N, G01R]
5312496 Skin pass rolling of mechanically scribed silicon steelExpiredNov 17, 92May 17, 94[H01F]
5293926 Method and apparatus for direct casting of continuous metal stripExpiredApr 30, 92Mar 15, 94[B22D]
5131573 Method and device for shrouding a stream of molten metalExpiredMar 22, 91Jul 21, 92[B22D]

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