Pressurized fluid line deresonator
US-10145501-B2 · Dec 4, 2018 · US
Reduction of noise or vibration
Reduction of noise or vibration · 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 | F15B21/008 |
| Official title | {Reduction of noise or vibration} |
| Display label | Reduction of noise or vibration |
| Total patents | 232 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 12 |
| 2017 | 18 |
| 2018 | 20 |
| 2019 | 27 |
| 2020 | 35 |
| 2021 | 39 |
| 2022 | 18 |
| 2023 | 16 |
| 2024 | 19 |
| 2025 | 17 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Oil vibration diagnosis apparatus and oil vibration diagnosis method
US-2018321079-A1 · Nov 8, 2018 · US
Hydraulic Unit
US-2018304873-A1 · Oct 25, 2018 · US
Damping device
US-2018306215-A1 · Oct 25, 2018 · US
Vent assembly and method for a digital valve positioner
US-2018283567-A1 · Oct 4, 2018 · US
Electro hydrostatic actuators
US-10087962-B2 · Oct 2, 2018 · US
Low pressure drop acoustic suppressor nozzle for fire protection inert gas discharge system
US-2018272166-A1 · Sep 27, 2018 · US
Low pressure drop acoustic suppressor nozzle for inert gas discharge system
US-2018272167-A1 · Sep 27, 2018 · US
Valve structure, and hydraulic device, fluid machine, and machine, each having same
US-2018259081-A1 · Sep 13, 2018 · US
Hydraulic system having automatic ride control
US-10030364-B2 · Jul 24, 2018 · US
Apparatus and methods for the control of hydraulic actuators
US-2018180066-A1 · Jun 28, 2018 · US
Active damping ride control system for attenuating oscillations in a hydraulic actautor of a machine
US-2018163373-A1 · Jun 14, 2018 · US
Work vehicle
US-2018163372-A1 · Jun 14, 2018 · US
Hydraulic system and method for reducing boom bounce with counter-balance protection
US-2018156243-A1 · Jun 7, 2018 · US
Vent assembly and method for a digital valve positioner
US-9989159-B2 · Jun 5, 2018 · US
Automatic transmission control valve body structure
US-9945496-B2 · Apr 17, 2018 · US
Damping device
US-2018094657-A1 · Apr 5, 2018 · US
Damping device
US-2018045353-A1 · Feb 15, 2018 · US
Solenoid valve control system, a control valve system, and a method of controlling electronic valve
US-9891634-B2 · Feb 13, 2018 · US
Vibration damper for a hydraulic clutch actuator
US-2018023636-A1 · Jan 25, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F15B21/008?
- CPC F15B21/008 is the Cooperative Patent Classification code for “Reduction of noise or vibration.”
- How many patents are filed under CPC F15B21/008 (Reduction of noise or vibration)?
- Our database includes 232 publications tagged with this CPC code.
- Is patent activity under CPC F15B21/008 growing?
- Publication counts under this code: 19 in 2024 vs 17 in 2025 (latest complete years).