Building HVAC system with sample collection
US-12578117-B2 · Mar 17, 2026 · US
with a single air duct for transporting treated air from the central station to the rooms
with a single air duct for transporting treated air from the central station to the rooms · 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 | F24F2003/0446 |
| Official title | {with a single air duct for transporting treated air from the central station to the rooms} |
| Display label | with a single air duct for transporting treated air from the central station to the rooms |
| Total patents | 38 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2017 | 2 |
| 2019 | 4 |
| 2020 | 6 |
| 2021 | 9 |
| 2022 | 1 |
| 2023 | 8 |
| 2024 | 2 |
| 2025 | 5 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Heat transfer system
US-2025264244-A1 · Aug 21, 2025 · US
Heat transfer system and environmental control system with heat transfer system
US-12339028-B2 · Jun 24, 2025 · US
Hvac system
US-2025198645-A1 · Jun 19, 2025 · US
Integrated zone control system
US-12264842-B2 · Apr 1, 2025 · US
HVAC system
US-12188677-B2 · Jan 7, 2025 · US
Air conditioning system and control method for the same
US-12181167-B2 · Dec 31, 2024 · US
Moderate-to-low global warming potential value refrigerant leak detection
US-2024060668-A1 · Feb 22, 2024 · US
Moderate-to-low global warming potential value refrigerant leak detection
US-11802700-B2 · Oct 31, 2023 · US
Method and system for supply-air re-circulation
US-11788761-B2 · Oct 17, 2023 · US
Heat transfer system and environmental control system with heat transfer system
US-2023266035-A1 · Aug 24, 2023 · US
Hvac system
US-2023266034-A1 · Aug 24, 2023 · US
Heat transfer system and environmental control system with heat transfer system
US-11686498-B2 · Jun 27, 2023 · US
HVAC system
US-11680726-B2 · Jun 20, 2023 · US
Integrated hydronic heating and refrigerant cooling heat exchanger
US-2023152003-A1 · May 18, 2023 · US
Building hvac system with sample collection
US-2023103453-A1 · Apr 6, 2023 · US
Air conditioning system and control method for the same
US-2022341620-A1 · Oct 27, 2022 · US
Integrated zone control system
US-2021372636-A1 · Dec 2, 2021 · US
Hvac system
US-2021333007-A1 · Oct 28, 2021 · US
Heat transfer system and environmental control system with heat transfer system
US-2021293441-A1 · Sep 23, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F24F2003/0446?
- CPC F24F2003/0446 is the Cooperative Patent Classification code for “with a single air duct for transporting treated air from the central station to the rooms.”
- How many patents are filed under CPC F24F2003/0446 (with a single air duct for transporting treated air from the central station to the rooms)?
- Our database includes 38 publications tagged with this CPC code.
- Is patent activity under CPC F24F2003/0446 growing?
- Publication counts under this code: 2 in 2024 vs 5 in 2025 (latest complete years).