Shock absorber
US-11204074-B2 · Dec 21, 2021 · US
Adjustment of valve bias or pre-stress (F16F9/443 takes precedence)
Adjustment of valve bias or pre-stress (F16F9/443 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 | F16F9/446 |
| Official title | {Adjustment of valve bias or pre-stress (F16F9/443 takes precedence)} |
| Display label | Adjustment of valve bias or pre-stress (F16F9/443 takes precedence) |
| Total patents | 101 |
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 | 11 |
| 2017 | 12 |
| 2018 | 6 |
| 2019 | 15 |
| 2020 | 11 |
| 2021 | 11 |
| 2022 | 10 |
| 2023 | 9 |
| 2024 | 6 |
| 2025 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method and apparatus for an adjustable damper
US-10859133-B2 · Dec 8, 2020 · US
Shock absorber
US-10844926-B2 · Nov 24, 2020 · US
Piston-cylinder assembly
US-10808791-B2 · Oct 20, 2020 · US
Variable damping force shock absorber
US-2020309228-A1 · Oct 1, 2020 · US
Shock absorber
US-2020191229-A1 · Jun 18, 2020 · US
Suspension damper with by-pass valves
US-2020180385-A1 · Jun 11, 2020 · US
Shock device in particular for bicycles
US-10668975-B2 · Jun 2, 2020 · US
Damping force controlling shock absorber
US-2020049220-A1 · Feb 13, 2020 · US
Suspension damper with by-pass valves
US-10556477-B2 · Feb 11, 2020 · US
Damping valve and damper
US-10544852-B2 · Jan 28, 2020 · US
Controllable shock absorber for motor vehicles
US-10526014-B2 · Jan 7, 2020 · US
Vibration Damper
US-2019383348-A1 · Dec 19, 2019 · US
Compression piston
US-2019344856-A1 · Nov 14, 2019 · US
Suspension damper having inertia valve and user adjustable pressure-relief
US-2019338824-A1 · Nov 7, 2019 · US
Shock absorber for a bicycle
US-2019337584-A1 · Nov 7, 2019 · US
A damper for absorbing shock generated upon docking a moving structure with a stationary structure or foundation
US-2019316311-A1 · Oct 17, 2019 · US
Hydraulic damping cylinder, in particular for a knee prosthesis
US-10413430-B2 · Sep 17, 2019 · US
Method and apparatus for an adjustable damper
US-2019271374-A1 · Sep 5, 2019 · US
Dual mode hydraulic damper
US-10393210-B2 · Aug 27, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16F9/446?
- CPC F16F9/446 is the Cooperative Patent Classification code for “Adjustment of valve bias or pre-stress (F16F9/443 takes precedence).”
- How many patents are filed under CPC F16F9/446 (Adjustment of valve bias or pre-stress (F16F9/443 takes precedence))?
- Our database includes 101 publications tagged with this CPC code.
- Is patent activity under CPC F16F9/446 growing?
- Publication counts under this code: 6 in 2024 vs 6 in 2025 (latest complete years).