- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16F - Springs; shock-absorbers; means 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: 456
10-year publication summary
|
33
|
47
|
52
|
49
|
40
|
44
|
55
|
48
|
36
|
21
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi Astemo, Ltd. | 5618 |
82 |
| Fox Factory, Inc. | 752 |
30 |
| DRiV Automotive Inc. | 280 |
30 |
| Tenneco Automotive Operating Company Inc. | 658 |
27 |
| BeijingWest Industries, Co., Ltd. | 141 |
23 |
| KYB Corporation | 1278 |
19 |
| ZF Friedrichshafen AG | 6820 |
14 |
| ThyssenKrupp AG | 3086 |
13 |
| ThyssenKrupp Bilstein GmbH | 188 |
12 |
| Inventus Engineering GmbH | 176 |
11 |
| HL Mando Corporation | 1310 |
10 |
| Clearmotion, Inc. | 148 |
9 |
| Bell Helicopter Textron Inc. | 1122 |
6 |
| Sistemi Sospensioni S.p.A. | 59 |
6 |
| FTC Solar, Inc. | 80 |
6 |
| PSA Automobiles SA | 2057 |
6 |
| Goodrich Corporation | 2081 |
5 |
| Grammer AG | 395 |
5 |
| Ohlins Racing AB | 130 |
5 |
| Koni B.V. | 46 |
4 |
| Other owners | 133 |