- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16J - Pistons; cylinders; pressure vessels in general; sealings
- F16J 15/3284 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
Patent holdings for IPC class F16J 15/3284
Total number of patents in this class: 431
10-year publication summary
|
32
|
46
|
43
|
50
|
61
|
59
|
51
|
54
|
74
|
6
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NOK Corporation | 2162 |
36 |
| Saint-Gobain Performance Plastics Corporation | 1025 |
26 |
| Carl Freudenberg KG | 1353 |
21 |
| Aktiebolaget SKF | 2834 |
14 |
| Rtx Corporation | 9077 |
12 |
| Caterpillar Inc. | 9149 |
11 |
| ElringKlinger AG | 512 |
11 |
| Trelleborg Sealing Solutions Germany GmbH | 188 |
11 |
| Schaeffler Technologies AG & Co. KG | 9364 |
9 |
| Halliburton Energy Services, Inc. | 20411 |
8 |
| NTN Corporation | 4980 |
7 |
| ElringKlinger Kunststofftechnik GmbH | 26 |
7 |
| Eagle Industry Co., Ltd. | 1099 |
6 |
| Trelleborg Sealing Solutions US, Inc. | 39 |
6 |
| Rolls-Royce Corporation | 1719 |
5 |
| Valqua, Ltd. | 264 |
5 |
| Schlumberger Technology Corporation | 10228 |
4 |
| Raytheon Company | 8438 |
4 |
| JTEKT Corporation | 2435 |
4 |
| Nakanishi Metal Works Co., Ltd. | 110 |
4 |
| Other owners | 220 |