Front forks for bicycles
US-2025313299-A1 · Oct 9, 2025 · US
Drainage arrangements
Drainage arrangements · 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 | F16F9/437 |
| Official title | {Drainage arrangements} |
| Display label | Drainage arrangements |
| Total patents | 27 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2016 | 3 |
| 2017 | 7 |
| 2018 | 4 |
| 2019 | 2 |
| 2020 | 3 |
| 2021 | 2 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 1 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Damper with asymmetrical valve preload ring
US-2025215951-A1 · Jul 3, 2025 · US
Valve seat for damper with externally mounted valve
US-2025198479-A1 · Jun 19, 2025 · US
Clevis-ended suspension strut manufactured without welds
US-12023974-B2 · Jul 2, 2024 · US
Load absorbing tie rod for aircraft structure integration
US-2023303250-A1 · Sep 28, 2023 · US
Clevis-ended suspension strut manufactured without welds
US-2022009302-A1 · Jan 13, 2022 · US
Damper
US-11199241-B2 · Dec 14, 2021 · US
Pressure relief for air springs
US-10900538-B2 · Jan 26, 2021 · US
Dual-stage, separated gas/fluid shock strut servicing
US-10865848-B2 · Dec 15, 2020 · US
Pressure relief for air springs
US-2020132154-A1 · Apr 30, 2020 · US
Damper
US-2020003272-A1 · Jan 2, 2020 · US
Shock absorber
US-2019048966-A1 · Feb 14, 2019 · US
Dual-stage, separated gas/fluid shock strut servicing
US-2019011009-A1 · Jan 10, 2019 · US
Air spring and railcar
US-10112627-B2 · Oct 30, 2018 · US
Air spring
US-10086850-B2 · Oct 2, 2018 · US
Structure of semi-active mount
US-10077820-B2 · Sep 18, 2018 · US
Cylinder device
US-10054183-B2 · Aug 21, 2018 · US
Structure of semi-active mount
US-2017276208-A1 · Sep 28, 2017 · US
Vibration damping device
US-9772003-B2 · Sep 26, 2017 · US
Liquid sealed mount
US-9664246-B2 · May 30, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16F9/437?
- CPC F16F9/437 is the Cooperative Patent Classification code for “Drainage arrangements.”
- How many patents are filed under CPC F16F9/437 (Drainage arrangements)?
- Our database includes 27 publications tagged with this CPC code.
- Is patent activity under CPC F16F9/437 growing?
- Publication counts under this code: 1 in 2024 vs 3 in 2025 (latest complete years).