Noise suppression apparatus for an air handling unit
US-2023400221-A1 · Dec 14, 2023 · US
using resonance
using resonance · 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 | F24F2013/245 |
| Official title | {using resonance} |
| Display label | using resonance |
| Total patents | 82 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 3 |
| 2017 | 4 |
| 2018 | 2 |
| 2019 | 6 |
| 2020 | 11 |
| 2021 | 13 |
| 2022 | 7 |
| 2023 | 13 |
| 2024 | 11 |
| 2025 | 8 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Silencing system
US-11835253-B2 · Dec 5, 2023 · US
Sound isolating wall assembly having at least one acoustic scatterer
US-11776522-B2 · Oct 3, 2023 · US
Soundproof structure body
US-11682374-B2 · Jun 20, 2023 · US
Noise suppression apparatus for an air handling unit
US-11674716-B2 · Jun 13, 2023 · US
Compact duct sound absorber
US-11662048-B2 · May 30, 2023 · US
Soundproof structure body
US-11636839-B2 · Apr 25, 2023 · US
Air-sending device, and air-conditioning apparatus including the air-sending device
US-11614096-B2 · Mar 28, 2023 · US
Soundproof system
US-11580948-B2 · Feb 14, 2023 · US
Ventilation duct line assembly and apparatus
US-11543152-B2 · Jan 3, 2023 · US
Tunable silencer for air handling unit
US-2022415298-A1 · Dec 29, 2022 · US
System and method for generating white noise using a packaged terminal air conditioner unit
US-11530822-B2 · Dec 20, 2022 · US
Silencing device and air supply system
US-2022357075-A1 · Nov 10, 2022 · US
Silencing system
US-11493232-B2 · Nov 8, 2022 · US
Microperforated conduit
US-11402123-B2 · Aug 2, 2022 · US
Low drag, variable-depth acoustic liner
US-11353240-B2 · Jun 7, 2022 · US
Sound isolating wall assembly having at least one acoustic scatterer
US-2022148554-A1 · May 12, 2022 · US
Sound suppression chamber for an HVAC air handling assembly
US-11193693-B2 · Dec 7, 2021 · US
Noise suppression apparatus for an air handling unit
US-2021318023-A1 · Oct 14, 2021 · US
Compact duct sound absorber
US-2021301965-A1 · Sep 30, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F24F2013/245?
- CPC F24F2013/245 is the Cooperative Patent Classification code for “using resonance.”
- How many patents are filed under CPC F24F2013/245 (using resonance)?
- Our database includes 82 publications tagged with this CPC code.
- Is patent activity under CPC F24F2013/245 growing?
- Publication counts under this code: 11 in 2024 vs 8 in 2025 (latest complete years).