Noise attenuators for use with process control devices
US-11156317-B2 · Oct 26, 2021 · US
Noise absorbers (F16L55/027 takes precedence)
Noise absorbers (F16L55/027 takes precedence) · 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 | F16L55/033 |
| Official title | Noise absorbers (F16L55/027 takes precedence) |
| Display label | Noise absorbers (F16L55/027 takes precedence) |
| Total patents | 113 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 11 |
| 2016 | 9 |
| 2017 | 7 |
| 2018 | 10 |
| 2019 | 11 |
| 2020 | 11 |
| 2021 | 15 |
| 2022 | 11 |
| 2023 | 13 |
| 2024 | 7 |
| 2025 | 7 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method and apparatus to accommodate sensors on an exhaust component
US-10823036-B1 · Nov 3, 2020 · US
Aircraft motive flow line
US-2020331623-A1 · Oct 22, 2020 · US
Method of Manufacturing a Fluid Pressure Reduction Device
US-2020326017-A1 · Oct 15, 2020 · US
Acoustic absorber for fan noise reduction
US-2020284174-A1 · Sep 10, 2020 · US
Muffler brace assembly
US-2020248611-A1 · Aug 6, 2020 · US
Holding clamp for holding vehicle parts in a vehicle
US-10723291-B2 · Jul 28, 2020 · US
Method of manufacturing a fluid pressure reduction device
US-10697561-B2 · Jun 30, 2020 · US
Sound absorber
US-2020141357-A1 · May 7, 2020 · US
Refrigerant-channel branching component, and refrigeration apparatus including refrigerant-channel branching component
US-2020116400-A1 · Apr 16, 2020 · US
Sound absorbing duct for environmental control system
US-2020056803-A1 · Feb 20, 2020 · US
Air conditioner
US-2020049391-A1 · Feb 13, 2020 · US
Flow stabilizer for a control valve
US-10495234-B2 · Dec 3, 2019 · US
Acoustical attenuator in storage array to improve performance
US-10468010-B2 · Nov 5, 2019 · US
Systems for and methods of differentiating pipe insulation
US-2019285222-A1 · Sep 19, 2019 · US
Damping device
US-10400800-B2 · Sep 3, 2019 · US
Damping device
US-10378564-B2 · Aug 13, 2019 · US
Holding clamp for holding vehicle parts in a vehicle
US-2019225169-A1 · Jul 25, 2019 · US
Noise attenuators for use with process control devices
US-2019145566-A1 · May 16, 2019 · US
Duct assembly having internal noise reduction features, thermal insulation and leak detection
US-2019120414-A1 · Apr 25, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16L55/033?
- CPC F16L55/033 is the Cooperative Patent Classification code for “Noise absorbers (F16L55/027 takes precedence).”
- How many patents are filed under CPC F16L55/033 (Noise absorbers (F16L55/027 takes precedence))?
- Our database includes 113 publications tagged with this CPC code.
- Is patent activity under CPC F16L55/033 growing?
- Publication counts under this code: 7 in 2024 vs 7 in 2025 (latest complete years).