- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16J - Pistons; cylinders; pressure vessels in general; sealings
- F16J 15/3252 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports
Patent holdings for IPC class F16J 15/3252
Total number of patents in this class: 161
10-year publication summary
|
2
|
20
|
24
|
25
|
32
|
24
|
20
|
10
|
8
|
4
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NOK Corporation | 2108 |
21 |
| Aktiebolaget SKF | 2700 |
11 |
| Carl Freudenberg KG | 1346 |
5 |
| Dana Automotive Systems Group, LLC | 395 |
4 |
| Eagle Industry Co., Ltd. | 1062 |
4 |
| ElringKlinger AG | 487 |
4 |
| Fisher Controls International LLC | 1520 |
4 |
| Oetiker Schweiz AG | 165 |
4 |
| Schaeffler Technologies AG & Co. KG | 8880 |
3 |
| ElringKlinger Kunststofftechnik GmbH | 24 |
3 |
| Garlock Sealing Technologies LLC | 149 |
3 |
| Saint-Gobain Performance Plastics Corporation | 1028 |
3 |
| Trelleborg Sealing Solutions Germany GmbH | 183 |
3 |
| Rtx Corporation | 8674 |
3 |
| Schlumberger Canada Limited | 6913 |
2 |
| NTN Corporation | 5008 |
2 |
| Freudenberg Sealing Technologies S.A.S. di Externa Italia S.r.l.u | 19 |
2 |
| Mitsubishi Hitachi Power Systems, Ltd. | 999 |
2 |
| Nidec GPM GmbH | 152 |
2 |
| Peak Well Systems Limited | 9 |
2 |
| Other owners | 74 |