Method for controlling air output volume
US-9803881-B2 · Oct 31, 2017 · US
for maintaining constant air flow rate or air velocity
for maintaining constant air flow rate or air velocity · 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 | F24F11/75 |
| Official title | for maintaining constant air flow rate or air velocity |
| Display label | for maintaining constant air flow rate or air velocity |
| Total patents | 178 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 31 |
| 2016 | 21 |
| 2017 | 24 |
| 2018 | 24 |
| 2019 | 17 |
| 2020 | 20 |
| 2021 | 12 |
| 2022 | 7 |
| 2023 | 6 |
| 2024 | 10 |
| 2025 | 5 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Energy management system and method
US-9766645-B2 · Sep 19, 2017 · US
Air conditioner
US-2017219238-A1 · Aug 3, 2017 · US
Air conditioning system and control method thereof
US-9709309-B2 · Jul 18, 2017 · US
Video guidance for smart-home device installation
US-2017177944-A1 · Jun 22, 2017 · US
Mobile user interface for event notifications arising from smart-home hazard detection devices
US-9652976-B2 · May 16, 2017 · US
Smart-home hazard detector with adaptive heads up pre-alarm criteria
US-9626858-B2 · Apr 18, 2017 · US
Smart-home multi-functional device with guided installation
US-2017092115-A1 · Mar 30, 2017 · US
Mobile user interface for smart-home hazard detector configuration
US-2016371969-A1 · Dec 22, 2016 · US
Heating, ventilation, and air conditioning management system and method
US-9519295-B2 · Dec 13, 2016 · US
Mobile user interface for smart-home hazard detector configuration
US-9520054-B2 · Dec 13, 2016 · US
Visual and auditory user notification methods for smart-home hazard detector
US-2016335884-A1 · Nov 17, 2016 · US
Smart-home hazard detector providing sensor-based device positioning guidance
US-9489829-B2 · Nov 8, 2016 · US
Direct power control for constant airflow control
US-2016281723-A1 · Sep 29, 2016 · US
Air conditioning system and control method thereof
US-2016252284-A1 · Sep 1, 2016 · US
System and method for controlling an hvac unit based on thermostat signals
US-2016252266-A1 · Sep 1, 2016 · US
Visual and auditory user notification methods for smart-home hazard detector
US-9430933-B2 · Aug 30, 2016 · US
Air purifier
US-2016245543-A1 · Aug 25, 2016 · US
Smart-home multi-functional hazard detector providing location-specific feature configuration
US-2016232779-A1 · Aug 11, 2016 · US
Method for controlling air volume
US-9347453-B2 · May 24, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F24F11/75?
- CPC F24F11/75 is the Cooperative Patent Classification code for “for maintaining constant air flow rate or air velocity.”
- How many patents are filed under CPC F24F11/75 (for maintaining constant air flow rate or air velocity)?
- Our database includes 178 publications tagged with this CPC code.
- Is patent activity under CPC F24F11/75 growing?
- Publication counts under this code: 10 in 2024 vs 5 in 2025 (latest complete years).