- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16J - Pistonscylinderspressure vessels in generalsealings
- F16J 15/3284 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structureSelection of materials
Patent holdings for IPC class F16J 15/3284
Total number of patents in this class: 452
10-year publication summary
|
32
|
46
|
43
|
50
|
61
|
59
|
52
|
54
|
74
|
32
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NOK Corporation | 2210 |
38 |
| Saint-Gobain Performance Plastics Corporation | 1036 |
27 |
| Carl Freudenberg KG | 1367 |
22 |
| Aktiebolaget SKF | 2921 |
14 |
| Rtx Corporation | 9297 |
13 |
| Trelleborg Sealing Solutions Germany GmbH | 190 |
12 |
| Caterpillar Inc. | 9472 |
11 |
| ElringKlinger AG | 533 |
10 |
| Halliburton Energy Services, Inc. | 20749 |
9 |
| Schaeffler Technologies AG & Co. KG | 9747 |
9 |
| NTN Corporation | 4974 |
7 |
| ElringKlinger Kunststofftechnik GmbH | 25 |
7 |
| Valqua, Ltd. | 275 |
7 |
| Eagle Industry Co., Ltd. | 1125 |
6 |
| Trelleborg Sealing Solutions US, Inc. | 38 |
6 |
| Schlumberger Technology Corporation | 10627 |
4 |
| Raytheon Company | 8388 |
4 |
| JTEKT Corporation | 2486 |
4 |
| Freudenberg-NOK General Partnership | 170 |
4 |
| Nakanishi Metal Works Co., Ltd. | 120 |
4 |
| Other owners | 234 |