- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16J - Pistons; cylinders; pressure vessels in general; sealings
- 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: 370
10-year publication summary
|
33
|
36
|
40
|
41
|
23
|
25
|
21
|
17
|
17
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NOK Corporation | 2108 |
59 |
| NTN Corporation | 5008 |
49 |
| Eagle Industry Co., Ltd. | 1062 |
19 |
| Fukoku Co., Ltd. | 69 |
7 |
| New Power Concepts LLC | 29 |
7 |
| NHK Spring Co., Ltd. | 1657 |
7 |
| Hitachi Astemo, Ltd. | 5618 |
7 |
| Honda Motor Co., Ltd. | 24537 |
6 |
| Sumitomo Riko Company Limited | 962 |
6 |
| Toyo Tire & Rubber Co., Ltd. | 631 |
6 |
| Hitachi Automotive Systems, Ltd. | 3970 |
5 |
| ADVICS Co., Ltd. | 1182 |
5 |
| EagleBurgmann Japan Co., Ltd. | 52 |
5 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
4 |
| ZF Friedrichshafen AG | 6820 |
4 |
| NSK Ltd. | 2719 |
4 |
| KYB Corporation | 1278 |
4 |
| Carl Freudenberg KG | 1346 |
3 |
| GKN Driveline International GmbH | 189 |
3 |
| Hi-Lex Corporation | 328 |
3 |
| Other owners | 157 |