Paul Wurth Refractory & Engineering GmbH

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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 617
 
  
 
F27B FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS321
 
  
 
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 223
 
  
 
B23P OTHER WORKING OF METAL; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS 155
 
  
 
F23K FEEDING FUEL TO COMBUSTION APPARATUS 110
 
  
 
F23L AIR SUPPLY; DRAUGHT-INDUCING; SUPPLYING NON-COMBUSTIBLE LIQUID OR GAS 116

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9028743 Bustle pipe arrangementDec 16, 09May 12, 15[F27B, F27D, C21B]
8991475 Checker brick with through passages for a hot blast stoveDec 24, 08Mar 31, 15[F23L, C21B]
8992823 Method of operating regenerative heaters in blast furnace plantAug 13, 12Mar 31, 15[C21B]
8889060 Device for regulating the temperature of a gas in a hot gas mainMay 18, 10Nov 18, 14[F23K, F27B, F27D, C21B]
8808616 Bustle pipe arrangementDec 16, 09Aug 19, 14[F27B, F27D, C21B]
8517725 Ceramic burnerApr 30, 08Aug 27, 13[C21B]
8418339 Method for constructing a support ring in a curved wallApr 30, 08Apr 16, 13[B23P]

Expired/Abandoned/Withdrawn Patents

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