Ruhr Oel GmbH

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B23K SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM 192
 
  
 
F28F DETAILS OF HEAT-EXCHANGE OR HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION 151

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8210245 Shell-and-tube heat exchanger comprising a wear-resistant tube plate liningJul 03, 06Jul 03, 12[F28F]
6307178 Method for welding shaped bodies made of carburized heat-resistant steelMar 21, 00Oct 23, 01[B23K]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7823744 Storage container for water-endangering liquidsExpiredDec 21, 06Nov 02, 10[F16K, F16L, D06F, B65D]
7171978 Storage container for water-endangering liquidsExpiredMar 05, 02Feb 06, 07[D06F]
6203629 Process for cutting coked metal molded partsExpiredMar 18, 99Mar 20, 01[B23K]
6155337 Tubular heat exchanger for connection downstream of a thermal-cracking installationExpiredMay 15, 98Dec 05, 00[F28F]

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