PAUL WURTH S.A.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C21B MANUFACTURE OF IRON OR STEEL 521
 
  
 
F27D DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE 323
 
  
 
F27B FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS313
 
  
 
B65G TRANSPORT OR STORAGE DEVICES, e.g. CONVEYERS FOR LOADING OR TIPPING; SHOP CONVEYER SYSTEMS; PNEUMATIC TUBE CONVEYERS 1354
 
  
 
C21C PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL 108
 
  
 
C22B PRODUCTION OR REFINING OF METALS 523
 
  
 
F23K FEEDING FUEL TO COMBUSTION APPARATUS 56
 
  
 
B02C CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN 332
 
  
 
B22D CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES 346
 
  
 
C04B LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS 365

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2017/0307,293 DEVICE FOR COOLING A SHAFT FURNACE DISTRIBUTION CHUTE SUPPORT JOURNALSOct 21, 15Oct 26, 17[F27B, C21B]
2017/0233,839 BLAST FURNACE PLANTAug 18, 15Aug 17, 17[F27D, C21B]
2017/0198,971 HEAT PROTECTION ASSEMBLY FOR A CHARGING INSTALLATION OF A METALLURGICAL REACTORJun 04, 15Jul 13, 17[F27B, F27D]
2017/0146,295 CHARGING INSTALLATION OF A METALLURGIAL REACTORJun 04, 15May 25, 17[F27B]
2017/0058,378 PROCESS FOR REDUCING THE AMOUNTS OF ZINC (ZN) AND LEAD (PB) IN MATERIALS CONTAINING IRON (FE)Feb 13, 15Mar 02, 17[C22B]
2015/0204,610 INSTALLATION FOR DISTRIBUTING PULVERULENT SUBSTANCE BY PNEUMATIC TRANSPORTATION, COMPRISING A DEVICE FOR DEPRESSURIZING A PRESSURIZED RESERVOIR IN WHICH SAID SUBSTANCE IS STOREDJul 03, 13Jul 23, 15[F27B, B65G, F27D]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9897379 Shaft furnace charging device equipped with a cooling system and annular swivel joint thereforeJul 30, 15Feb 20, 18[F27B, F27D, C21B]
9835331 Ceramic bottom lining of a blast furnace hearthDec 16, 11Dec 05, 17[B28B, F23M, F27D, C21C, C21B]
9683783 Stave cooler for a metallurgical furnace and method for protecting a stave coolerDec 19, 14Jun 20, 17[F27B, F27D, C21C, C21B]
9587882 Hearth for a metallurgical furnace having an improved wall liningJul 26, 11Mar 07, 17[F27B, F27D, C21C, C21B]
9568246 Ramming mass for the refractory lining of a metallurgical vessel, method for the placement thereof and metallurgical vessel, in particular blast furnace, comprising a lining using said ramming massSep 05, 12Feb 14, 17[C04B, F27B, F27D, C21C, C21B]
9546819 Rotary charging device for shaft furnaceJul 15, 13Jan 17, 17[F27B, F27D, C21B]
9506122 Blast furnace installationOct 05, 12Nov 29, 16[F27B, F27D, C21B]
9393616 Spreading device for bulk material on a circular surface and method for operating the sameNov 11, 13Jul 19, 16[C22B, F27D, B22D, C21C]
9389019 Rotary charging device for shaft furnaceJul 15, 13Jul 12, 16[F27B, F27D, C21B]
9371571 Granulation of metallurgical slagDec 14, 11Jun 21, 16[C22B, B02C, C04B, C21B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2016/0169,583 STEAM CONDENSATION TOWER FOR A GRANULATION INSTALLATIONAbandonedJun 27, 14Jun 16, 16[F27D, C21B]
2016/0169,584 STEAM CONDENSATION SYSTEM FOR A GRANULATION INSTALLATIONAbandonedJun 27, 14Jun 16, 16[F27D, C21B]
2014/0352,294 COLD WIND GENERATION FROM SLAG HEATAbandonedDec 14, 12Dec 04, 14[F04D]
2014/0166,116 CHARGING DEVICE FOR SHAFT FURNACE WITH CONTROLLER FOR CLEAN GAS FED TO ITS MAIN CASINGAbandonedJul 19, 12Jun 19, 14[F27B, F27D]
2013/0316,295 STAVE COOLER FOR A METALLURGICAL FURNACEAbandonedJan 31, 12Nov 28, 13[F27D]
8568653 Sealing valve arrangement for a shaft furnace charging installationExpiredJul 05, 10Oct 29, 13[F16K]
2013/0152,632 METHOD AND DEVICE FOR MANUFACTURING VITREOUS SLAGAbandonedMay 25, 11Jun 20, 13[C04B]
8382471 Multiple hearth furnaceExpiredFeb 15, 08Feb 26, 13[F27B]
8376681 Charging device for a shaft furnaceExpiredAug 08, 06Feb 19, 13[B66C]
8152430 Three hopper charging installation for a shaft furnaceExpiredDec 29, 06Apr 10, 12[F27D]
8152882 Dust-catcher for blast furnace gasExpiredJul 22, 08Apr 10, 12[B01D]
2012/0070,253 DEVICE FOR DISTRIBUTING CHARGE MATERIAL IN A SHAFT FURNANCEAbandonedJun 03, 10Mar 22, 12[F27B, F27D, C21B]
8123453 Charging device for a shaft furnaceExpiredDec 08, 06Feb 28, 12[B65G]
2012/0045,298 SHAFT FURNACE CHARGING INSTALLATION HAVING A DRIVE MECHANISM FOR A DISTRIBUTION CHUTEAbandonedMar 23, 10Feb 23, 12[F27B, F27D]
2012/0031,236 METHOD AND INSTALLATION FOR PRODUCING DIRECT REDUCED IRONAbandonedApr 06, 10Feb 09, 12[F27B, F27D, C21B]
8101153 Method for the valorisation of zinc-and sulphate-rich residueExpiredMay 06, 08Jan 24, 12[C01G]
8092136 Multiple hopper charging installation for a shaft furnaceExpiredDec 27, 06Jan 10, 12[F27B]
8088192 Recovery of residues containing copper and other valuable metalsExpiredOct 10, 08Jan 03, 12[C22B]
8088327 Rotary charging device for a shaft furnaceExpiredNov 27, 07Jan 03, 12[C21B]
8062579 Device for moving a runnerExpiredJan 30, 06Nov 22, 11[C21B]

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