Collective exhaust system
US-12276421-B2 · Apr 15, 2025 · US
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Smoke conduit systems for factories or large buildings
Smoke conduit systems for factories or large buildings · 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 | F23J11/12 |
| Official title | Smoke conduit systems for factories or large buildings |
| Display label | Smoke conduit systems for factories or large buildings |
| Total patents | 9 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2018 | 2 |
| 2019 | 1 |
| 2020 | 3 |
| 2022 | 1 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Collective exhaust system
US-2022412558-A1 · Dec 29, 2022 · US
Selective catalytic reduction process and method of regenerating deactivated SCR catalyst of a parallel flue gas treating system
US-10722844-B2 · Jul 28, 2020 · US
Selective catalytic reduction process and method of regenerating deactivated scr catalyst of a parallel flue gas treating system
US-2020061537-A1 · Feb 27, 2020 · US
Combustion device and combustion device system including combustion device
US-10539338-B2 · Jan 21, 2020 · US
Water heating system
US-10240818-B2 · Mar 26, 2019 · US
Combustion device and combustion device system including combustion device
US-2018112890-A1 · Apr 26, 2018 · US
Water heating system
US-2018112891-A1 · Apr 26, 2018 · US
High altitude structures and related methods
US-2016362885-A1 · Dec 15, 2016 · US