Indugas, Inc.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F27B FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS123

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5997286 Thermal treating apparatus and processSep 11, 97Dec 07, 99[F27B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5697778 Daisywheel convector plate for batch coil annealing furnaceExpiredFeb 01, 95Dec 16, 97[C21D]
5492168 High convective heat transfer immersion heater/coolerExpiredOct 17, 94Feb 20, 96[F25B, C21D]
5419699 Seal arrangement for batch coil annealing furnaceExpiredApr 28, 94May 30, 95[F27B]
5297959 High temperature furnaceExpiredApr 15, 93Mar 29, 94[F27B]
5295822 Convective heat transfer by cascading jet impingement in a batch coil annealling furnaceExpiredApr 19, 93Mar 22, 94[F27B]
5290017 Cooling cover for batch coil annealing furnaceExpiredMar 01, 93Mar 01, 94[C21D]
5249436 Simplified, low cost absorption heat pumpExpiredApr 09, 92Oct 05, 93[F25B]
5228513 Convective heat transfer by cascading jet impingementExpiredMay 03, 91Jul 20, 93[F27B, F28D]
5224542 Gas fired radiant tube heaterExpiredJan 06, 92Jul 06, 93[E21B]
5207972 High temperature furnaceExpiredDec 10, 91May 04, 93[F27B]
5090891 Hybrid combustion device and system thereforExpiredSep 19, 90Feb 25, 92[F23C]
5082055 Gas fired radiant tube heaterExpiredJan 02, 91Jan 21, 92[E21B]
5078368 Gas fired melting furnaceExpiredMay 07, 90Jan 07, 92[F27B]
5020596 Enhanced oil recovery system with a radiant tube heaterExpiredJan 24, 90Jun 04, 91[E21B]
4959009 Pulse burner and method of operationExpiredJun 26, 89Sep 25, 90[F23C]
4913065 In situ thermal waste disposal systemExpiredMar 27, 89Apr 03, 90[F23D]
4781171 Gas fired particulate melting apparatus and methodExpiredJul 06, 87Nov 01, 88[F24H]

Top Inventors for This Owner

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