Air spring
US-11473643-B2 · Oct 18, 2022 · US
characterised by the wall structure
characterised by the wall structure · 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 | F16F9/0409 |
| Official title | {characterised by the wall structure} |
| Display label | characterised by the wall structure |
| Total patents | 71 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 12 |
| 2017 | 8 |
| 2018 | 7 |
| 2019 | 8 |
| 2020 | 6 |
| 2021 | 7 |
| 2022 | 7 |
| 2023 | 4 |
| 2024 | 3 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Air spring bellows made by processes employing a eutectic mixture
US-2022227968-A1 · Jul 21, 2022 · US
Air spring sleeve
US-2022154795-A1 · May 19, 2022 · US
Air spring sleeve
US-11268588-B2 · Mar 8, 2022 · US
Fluid-sealed engine mount
US-11255396-B2 · Feb 22, 2022 · US
Air spring
US-2022034381-A1 · Feb 3, 2022 · US
Packaging material
US-11208252-B2 · Dec 28, 2021 · US
Air suspension assembly and bellows for an air suspension assembly
US-2021332867-A1 · Oct 28, 2021 · US
3d-printed elastic products reinforced by means of continuous fibres and having asymmetrical elastic properties
US-2021324177-A1 · Oct 21, 2021 · US
Elastomeric articles with improved fire protection properties
US-11111979-B2 · Sep 7, 2021 · US
Vibration propagation suppressing apparatus
US-11041538-B2 · Jun 22, 2021 · US
Rolling lobe seal for an air spring assembly
US-2021062886-A1 · Mar 4, 2021 · US
Air springs with improved high temperature performance
US-10934419-B1 · Mar 2, 2021 · US
Fluid-sealed engine mount
US-2020378463-A1 · Dec 3, 2020 · US
Air spring unit having a divided outer guide
US-10851864-B2 · Dec 1, 2020 · US
Diaphragm damper device coiled wave spring and damper system
US-10753331-B2 · Aug 25, 2020 · US
Vibration propagation suppressing apparatus
US-2020217393-A1 · Jul 9, 2020 · US
Pressure body for a compressed-air system
US-2020182263-A1 · Jun 11, 2020 · US
Antioxidant precursors for elastomeric compositions
US-10584234-B1 · Mar 10, 2020 · US
Air springs with improved high temperature performance
US-10519302-B1 · Dec 31, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC F16F9/0409?
- CPC F16F9/0409 is the Cooperative Patent Classification code for “characterised by the wall structure.”
- How many patents are filed under CPC F16F9/0409 (characterised by the wall structure)?
- Our database includes 71 publications tagged with this CPC code.
- Is patent activity under CPC F16F9/0409 growing?
- Publication counts under this code: 3 in 2024 vs 3 in 2025 (latest complete years).