- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16F - Springsshock-absorbersmeans for damping vibration
- F16F 9/12 - Devices with one or more rotary vanes turning in the fluid, any throttling effect being immaterial
Patent holdings for IPC class F16F 9/12
Total number of patents in this class: 181
10-year publication summary
|
17
|
21
|
15
|
14
|
15
|
12
|
6
|
8
|
5
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nifco Inc. | 1103 |
28 |
| Illinois Tool Works Inc. | 11454 |
12 |
| Piolax Inc. | 405 |
10 |
| Simotec Co., Ltd. | 23 |
8 |
| Inventus Engineering GmbH | 188 |
7 |
| Alps Alpine Co., Ltd. | 2074 |
7 |
| Nien Made Enterprise Co., Ltd. | 149 |
5 |
| THK Co., Ltd. | 1201 |
5 |
| Audi AG | 7345 |
4 |
| Fulterer Gesellschaft m.b.H. | 27 |
4 |
| Oiles Corporation | 513 |
4 |
| TOK, Inc. | 47 |
4 |
| Somic Management Holdings Inc. | 68 |
4 |
| Alps Electric Co., Ltd. | 813 |
3 |
| Cultraro Automazione Engineering S.r.l. | 13 |
3 |
| TMT Machinery, Inc. | 46 |
3 |
| ZF Friedrichshafen AG | 7133 |
2 |
| Omron Corporation | 7252 |
2 |
| Aseismic Devices Co., Ltd. | 5 |
2 |
| KYB Corporation | 1356 |
2 |
| Other owners | 62 |