Passive and no-loss weather cap for protection of wind induced downdraft in sensitive exhaust system
US-11959636-B2 · Apr 16, 2024 · US
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Tops for chimneys or ventilating shafts; Terminals for flues
Tops for chimneys or ventilating shafts; Terminals for flues · Cooperative Patent Classification (CPC)
Engines, pumps, lighting, heating, and mechanical systems.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | F23L17/02 |
| Official title | Tops for chimneys or ventilating shafts; Terminals for flues |
| Display label | Tops for chimneys or ventilating shafts; Terminals for flues |
| Total patents | 14 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2016 | 5 |
| 2018 | 4 |
| 2019 | 1 |
| 2021 | 1 |
| 2022 | 2 |
| 2024 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Passive and no-loss weather cap for protectionof wind induced downdraft in sensitive exhaust system
US-2022163202-A1 · May 26, 2022 · US
Passive and no-loss weather cap for protection of wind induced downdraft in sensitive exhaust systems
US-11274825-B2 · Mar 15, 2022 · US
Rain cap vent flue adapter
US-2021088212-A1 · Mar 25, 2021 · US
Indoor installation type combustion apparatus
US-10393376-B2 · Aug 27, 2019 · US
Combined combustion device
US-10024536-B2 · Jul 17, 2018 · US
Exhaust structure for water heater
US-10012383-B2 · Jul 3, 2018 · US
Passive and no-loss weather cap for protection of wind induced downdraft in sensitive exhaust systems
US-2018017251-A1 · Jan 18, 2018 · US
Indoor Installation Type Combustion Apparatus
US-2018010793-A1 · Jan 11, 2018 · US
Method of installing exhaust tube
US-9341368-B2 · May 17, 2016 · US
Combined combustion device
US-2016123585-A1 · May 5, 2016 · US
Method of installing exhaust tube
US-2016053995-A1 · Feb 25, 2016 · US
Exhaust structure for combustion apparatus
US-2016053994-A1 · Feb 25, 2016 · US
Exhaust structure for water heater
US-2016053997-A1 · Feb 25, 2016 · US