COBLE, GWENDOLYN J.

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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 221
 
  
 
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
 
  
 
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 144

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5756043 Cast refractory base segments and modular fiber seal system for plural-stack annealing furnaceSep 18, 96May 26, 98[C21B]
D382339 Arcuate cast refractory and steel segment of an annealing furnace baseDec 21, 94Aug 12, 97[2303]
5578264 Cast refractory base segments and modular fiber seal system for plural-stack annealing furnaceApr 14, 95Nov 26, 96[C21B]
5483548 Insulated furnace door and wall panel systemAug 08, 94Jan 09, 96[F27D]
5335897 Insulated furnace door systemOct 31, 91Aug 09, 94[F27D]
5308046 Insulated furnace door systemApr 30, 91May 03, 94[C21D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6244197 Thermal induced cooling of industrial furnace componentsExpiredJan 03, 00Jun 12, 01[F23M, F28D, B22D]
5681525 Cast refractory base segments and modular fiber seal system for single-stack annealing furnaceExpiredJul 03, 96Oct 28, 97[F27D]
5575970 Cast refractory base segments and modular fiber seal system for plural-stack annealing furnaceExpiredMay 15, 96Nov 19, 96[F27D]
5562879 Cast refractory base segments and modular fiber seal system for single-stack annealing furnaceExpiredApr 14, 95Oct 08, 96[C21B]
D374072 Assembly of arcuate cast refractory and steel segments of an annealing furnace baseExpiredDec 21, 94Sep 24, 96[]
D374073 Cast refractory side segment of an annealing furnace baseExpiredDec 21, 94Sep 24, 96[]
D371836 Assembly of cast refractory segments of an annealing furnace baseExpiredDec 21, 94Jul 16, 96[]
D371837 Cast refractory corner segment of an annealing furnace baseExpiredDec 21, 94Jul 16, 96[]
5048802 Diffuser system for annealing furnace with chain reinforced, nodular iron convector platesExpiredNov 06, 90Sep 17, 91[F27B]
4755236 Method of annealing using diffuser system for annealing furnace with water cooled baseExpiredSep 15, 86Jul 05, 88[C21D]
4653171 Refractory insulation mounting system and insulated structuresExpiredOct 11, 84Mar 31, 87[E04B, B21D]
4647022 Refractory insulation mounting system and insulated structuresExpiredMar 21, 83Mar 03, 87[C21D, F23F]
4611791 Diffuser system for annealing furnace with water cooled baseExpiredMay 09, 85Sep 16, 86[F27B]
4516758 Diffuser system for annealing furnaceExpiredJan 10, 83May 14, 85[F27B]

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