USX CORPORATION, A CORP. OF DE

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B22D CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES 544
 
  
 
C10B DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS 118
 
  
 
C21C PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL 117

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5817246 Sliding gateAug 20, 97Oct 06, 98[B22D]
5733358 Process and apparatus for the manufacture of steel from iron carbideSep 11, 95Mar 31, 98[C21C]
RE35597 Refractory article for preventing vortexing in a metallurgical vesselDec 14, 94Aug 26, 97[B22D]
5171513 Refractory article for preventing vortexing in a metallurgical vesselMay 12, 92Dec 15, 92[B22D]
5110018 Closing apparatus for the bottom pouring hole of a casting ladleFeb 26, 91May 05, 92[B22D]
RE31959 Sealing means for a coke oven chuck doorApr 15, 81Jul 30, 85[C10B]
RE30343 Method and single piece annular nozzle to prevent alumina buildup during continuous casting of Al-killed steelMar 16, 79Jul 22, 80[B22D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6174426 Tin-plated steel with adhesion promoterExpiredAug 12, 99Jan 16, 01[C23C, C25D]
6137294 Prediction of bulk density of particulates with a correlation based on moisture contentExpiredJan 21, 99Oct 24, 00[G01R]
6120577 Treatment of steel mill waste metal oxidesExpiredMar 25, 98Sep 19, 00[C22B, C21B]
6053330 Adjustable roller screenExpiredFeb 25, 99Apr 25, 00[B07B]
5972072 Desulfurizing mixExpiredMay 26, 98Oct 26, 99[C21C]
5885325 Process and apparatus for the manufacture of steelExpiredAug 18, 97Mar 23, 99[C21C]
5873924 Desulfurizing mix and method for desulfurizing molten ironExpiredApr 07, 97Feb 23, 99[C21C]
5795410 Control of surface carbides in steel stripExpiredJan 23, 97Aug 18, 98[C22C]
5765806 Method of dislodging a stuck drift gageExpiredFeb 12, 96Jun 16, 98[E21B]
5676195 Method of and apparatus for limiting ingress of gas to incipient continuous cast slabsExpiredJul 27, 95Oct 14, 97[B22D]
5670075 Sealing gas delivery system for sliding jointsExpiredJan 22, 96Sep 23, 97[B22D]
5567482 Method of protecting steel stripExpiredDec 20, 95Oct 22, 96[C08J]
5556457 Recovery of steel plant revert materials through cementitious agglomerationExpiredApr 21, 95Sep 17, 96[C04B]
5556515 Coke oven doorExpiredNov 15, 94Sep 17, 96[C10B]
5554207 Process of recycling iron oxides and plastics in steelmakingExpiredNov 25, 94Sep 10, 96[C21B]
5536050 Connection for fabricating mandrel bar from used segmentsExpiredJan 23, 95Jul 16, 96[F16L]
5524867 Drift gauge rod pushing deviceExpiredOct 27, 94Jun 11, 96[E21B]
5518154 Gate and pour tube assembly for use in throttling gate valveExpiredNov 17, 94May 21, 96[B22D]
5516373 High performance steel strapping for elevated temperature service and method thereofExpiredFeb 21, 95May 14, 96[C21D, C22C]
5511766 Filtration deviceExpiredSep 28, 94Apr 30, 96[C22B]

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