- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16F - Springsshock-absorbersmeans for damping vibration
- F16F 9/18 - Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
Patent holdings for IPC class F16F 9/18
Total number of patents in this class: 484
10-year publication summary
|
44
|
50
|
48
|
40
|
40
|
54
|
48
|
38
|
39
|
14
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi Astemo, Ltd. | 6383 |
84 |
| Fox Factory, Inc. | 854 |
32 |
| DRiV Automotive Inc. | 281 |
28 |
| Tenneco Automotive Operating Company Inc. | 557 |
27 |
| BeijingWest Industries, Co., Ltd. | 153 |
23 |
| KYB Corporation | 1383 |
18 |
| ThyssenKrupp AG | 3315 |
17 |
| ZF Friedrichshafen AG | 7181 |
16 |
| ThyssenKrupp Bilstein GmbH | 204 |
16 |
| Clearmotion, Inc. | 175 |
12 |
| HL Mando Corporation | 1660 |
12 |
| Inventus Engineering GmbH | 190 |
11 |
| FTC Solar, Inc. | 78 |
7 |
| Bell Helicopter Textron Inc. | 1060 |
6 |
| Sistemi Sospensioni S.p.A. | 58 |
6 |
| PSA Automobiles SA | 2066 |
6 |
| Goodrich Corporation | 2140 |
5 |
| Grammer AG | 410 |
5 |
| Ohlins Racing AB | 132 |
5 |
| Advanced Suspension Technology LLC | 42 |
5 |
| Other owners | 143 |