- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16J - Pistonscylinderspressure vessels in generalsealings
- F16J 15/52 - Sealings between relatively-movable members, by means of a sealing without relatively-moving surfaces, e.g. fluid-tight sealings for transmitting motion through a wall by means of sealing bellows or diaphragms
Patent holdings for IPC class F16J 15/52
Total number of patents in this class: 362
10-year publication summary
|
40
|
41
|
24
|
25
|
21
|
17
|
17
|
11
|
11
|
10
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NOK Corporation | 2304 |
60 |
| NTN Corporation | 4921 |
37 |
| Eagle Industry Co., Ltd. | 1179 |
18 |
| New Power Concepts LLC | 26 |
8 |
| NHK Spring Co., Ltd. | 1989 |
7 |
| Hitachi Astemo, Ltd. | 6415 |
7 |
| Fukoku Co., Ltd. | 70 |
6 |
| Sumitomo Riko Company Limited | 1152 |
6 |
| Mitsubishi Heavy Industries, Ltd. | 9161 |
5 |
| Hitachi Automotive Systems, Ltd. | 3954 |
5 |
| ADVICS Co., Ltd. | 1385 |
5 |
| Honda Motor Co., Ltd. | 26090 |
4 |
| ZF Friedrichshafen AG | 7254 |
4 |
| NSK Ltd. | 2836 |
4 |
| EagleBurgmann Japan Co., Ltd. | 49 |
4 |
| GKN Driveline International GmbH | 146 |
4 |
| Hi-Lex Corporation | 382 |
4 |
| KYB Corporation | 1428 |
4 |
| Carl Freudenberg KG | 1493 |
3 |
| Showa Corporation | 188 |
3 |
| Other owners | 164 |