Assignee
CANADIAN GAS RESEARCH INST
CA·13 granted patents·358 citations·filing 1975–1998
Top patents by PatentIndex Score
13 records- 0190US5983890AFireplace having multi-zone heating controlCANADIAN GAS RESEARCH INST·Filed 1998·Granted Nov 16, 1999·94 cites·36 claims
- 0284US4275705ATwo-stage heat exchangerCANADIAN GAS RESEARCH INST·Filed 1980·Granted Jun 30, 1981·54 cites·31 claims
- 0375US4087742AHot water heater corrosion detector probeCANADIAN GAS RESEARCH INST·Filed 1975·Granted May 2, 1978·34 cites·10 claims
- 0471US5772421ALow nox burnerCANADIAN GAS RESEARCH INST·Filed 1995·Granted Jun 30, 1998·35 cites·21 claims
- 0563US4909307ARegenerative bed heat exchangerCANADIAN GAS RESEARCH INST·Filed 1988·Granted Mar 20, 1990·29 cites·25 claims
- 0659US4834285AHeating and ventilating systemCANADIAN GAS RESEARCH INST·Filed 1988·Granted May 30, 1989·20 cites·23 claims
- 0754US4708000AApparatus for balanced heat recovery ventilation - heating - humidification - dehumidification - cooling and filtration of airCANADIAN GAS RESEARCH INST·Filed 1987·Granted Nov 24, 1987·17 cites·18 claims
- 0853US5568804ASealed combustion rangeCANADIAN GAS RESEARCH INST·Filed 1994·Granted Oct 29, 1996·21 cites·19 claims
- 0942US5406932ASealed combustion rangeCANADIAN GAS RESEARCH INST·Filed 1992·Granted Apr 18, 1995·15 cites·11 claims
- 1041US4266513AFlue heat exchangerCANADIAN GAS RESEARCH INST·Filed 1979·Granted May 12, 1981·9 cites·13 claims
- 1138US5253635AGas-fired heaterCANADIAN GAS RESEARCH INST·Filed 1992·Granted Oct 19, 1993·12 cites·22 claims
- 1235US5447666AMethod of forming radiant fiber burnerCANADIAN GAS RESEARCH INST·Filed 1993·Granted Sep 5, 1995·13 cites·18 claims
- 1322US4436059AFlue condensate shieldCANADIAN GAS RESEARCH INST·Filed 1982·Granted Mar 13, 1984·5 cites·2 claims
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