Canadian Gas Research Institute

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F23C METHODS OR APPARATUS FOR COMBUSTION USING FLUENT FUEL 120
 
  
 
F24B DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES 19
 
  
 
F24C OTHER DOMESTIC STOVES OR RANGES; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION 132

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5983890 Fireplace having multi-zone heating controlJan 09, 98Nov 16, 99[F24B, F24C, F23C]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6345769 Water heating apparatus with sensible and latent heat recoveryExpiredApr 17, 01Feb 12, 02[F24D]
5772421 Low nox burnerExpiredNov 27, 95Jun 30, 98[F23C]
5568804 Sealed combustion rangeExpiredJan 26, 94Oct 29, 96[F24C]
5447666 Method of forming radiant fiber burnerExpiredNov 19, 93Sep 05, 95[B28B]
5406932 Sealed combustion rangeExpiredOct 23, 92Apr 18, 95[F24C]
4909307 Regenerative bed heat exchangerExpiredJan 25, 88Mar 20, 90[F28D]
4834285 Heating and ventilating systemExpiredJan 25, 88May 30, 89[F24F]
4708000 Apparatus for balanced heat recovery ventilation - heating -humidification - dehumidification - cooling and filtration of airExpiredMar 13, 87Nov 24, 87[F25B]
4436059 Flue condensate shieldExpiredApr 26, 82Mar 13, 84[F22B]
4275705 Two-stage heat exchangerExpiredJan 28, 80Jun 30, 81[F24H, F24B, F16F]
4266513 Flue heat exchangerExpiredAug 20, 79May 12, 81[F22B]

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