- 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: 512
10-year publication summary
|
46
|
43
|
50
|
61
|
59
|
52
|
53
|
76
|
59
|
27
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NOK Corporation | 2296 |
44 |
| Saint-Gobain Performance Plastics Corporation | 1053 |
27 |
| Carl Freudenberg KG | 1486 |
23 |
| Aktiebolaget SKF | 3126 |
16 |
| Rtx Corporation | 10082 |
14 |
| Caterpillar Inc. | 10272 |
13 |
| ElringKlinger AG | 574 |
13 |
| Schaeffler Technologies AG & Co. KG | 10948 |
12 |
| Trelleborg Sealing Solutions Germany GmbH | 187 |
12 |
| ElringKlinger Kunststofftechnik GmbH | 32 |
10 |
| Valqua, Ltd. | 298 |
10 |
| Halliburton Energy Services, Inc. | 21320 |
9 |
| NTN Corporation | 4915 |
7 |
| Eagle Industry Co., Ltd. | 1176 |
6 |
| Trelleborg Sealing Solutions US, Inc. | 69 |
6 |
| Schlumberger Technology Corporation | 11798 |
5 |
| Raytheon Company | 8457 |
4 |
| JTEKT Corporation | 2580 |
4 |
| John Crane Inc. | 104 |
4 |
| Nakanishi Metal Works Co., Ltd. | 129 |
4 |
| Other owners | 269 |