Fire pit
US-12571541-B2 · Mar 10, 2026 · US
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Supply of primary air for combustion
Supply of primary air for combustion · 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 | F24B5/023 |
| Official title | {Supply of primary air for combustion} |
| Display label | Supply of primary air for combustion |
| Total patents | 13 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2017 | 1 |
| 2018 | 2 |
| 2020 | 1 |
| 2022 | 2 |
| 2023 | 1 |
| 2024 | 2 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Indexed vent for natural draft cooking devices
US-12247744-B2 · Mar 11, 2025 · US
Gravity fed smoker
US-2025031903-A1 · Jan 30, 2025 · US
Fire pit ventilation insert ring
US-12000592-B1 · Jun 4, 2024 · US
Fire pit ventilation features
US-11885500-B1 · Jan 30, 2024 · US
Fire pit
US-2023358406-A1 · Nov 9, 2023 · US
Enhanced pellet fueled cooking device
US-11391464-B2 · Jul 19, 2022 · US
Indexed vent for natural draft cooking devices
US-2022196244-A1 · Jun 23, 2022 · US
Enhanced pellet fueled cooking device
US-2020370752-A1 · Nov 26, 2020 · US
Patterning method and a method of fabricating a semiconductor device using the same
US-10153214-B2 · Dec 11, 2018 · US
Combustion furnace
US-9945564-B2 · Apr 17, 2018 · US
Patterning method and a method of fabricating a semiconductor device using the same
US-2017207130-A1 · Jul 20, 2017 · US
Combustion Chamber for Charcoal Stove
US-2015211743-A1 · Jul 30, 2015 · US