- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16J - Pistonscylinderspressure vessels in generalsealings
- F16J 15/3256 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports comprising two casing or support elements, one attached to each surface, e.g. cartridge or cassette seals
Patent holdings for IPC class F16J 15/3256
Total number of patents in this class: 115
10-year publication summary
|
7
|
12
|
9
|
12
|
12
|
17
|
12
|
9
|
11
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NOK Corporation | 2273 |
18 |
| Aktiebolaget SKF | 3061 |
14 |
| NTN Corporation | 4950 |
9 |
| Schaeffler Technologies AG & Co. KG | 10629 |
5 |
| NSK Ltd. | 2821 |
5 |
| Eagle Industry Co., Ltd. | 1165 |
5 |
| Caterpillar Inc. | 10051 |
4 |
| Freudenberg Sealing Technologies S.A.S. di Externa Italia S.r.l.u | 28 |
4 |
| Uchiyama Manufacturing Corp. | 127 |
4 |
| Aktiebolaget SKF | 100 |
4 |
| Stryker Corporation | 5230 |
3 |
| Freudenberg-NOK General Partnership | 153 |
3 |
| Amsted Rail Company, Inc. | 430 |
2 |
| Consolidated Metco, Inc. | 172 |
2 |
| Peer Bearing Company | 8 |
2 |
| Trelleborg Sealing Solutions Germany GmbH | 188 |
2 |
| Trelleborg Sealing Solutions US, Inc. | 46 |
2 |
| FSI North America, Inc. | 5 |
2 |
| Kinetic Pressure Control Limited | 89 |
2 |
| Bridgestone Corporation | 7242 |
1 |
| Other owners | 22 |