- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16J - Pistonscylinderspressure vessels in generalsealings
- F16J 15/3244 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with hydrodynamic pumping action
Patent holdings for IPC class F16J 15/3244
Total number of patents in this class: 131
10-year publication summary
|
10
|
13
|
27
|
12
|
18
|
7
|
8
|
5
|
14
|
7
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NOK Corporation | 2224 |
49 |
| Trelleborg Sealing Solutions Germany GmbH | 191 |
9 |
| Aktiebolaget SKF | 2959 |
8 |
| Kalsi Engineering, Inc. | 53 |
7 |
| Eagle Industry Co., Ltd. | 1133 |
6 |
| Freudenberg-NOK General Partnership | 164 |
4 |
| Carl Freudenberg KG | 1372 |
3 |
| KACO GmbH + Co. KG | 52 |
3 |
| NOF Corporation | 217 |
3 |
| Caterpillar Inc. | 9594 |
2 |
| NTN Corporation | 4965 |
2 |
| Amsted Rail Company, Inc. | 439 |
2 |
| Stein Seal Company | 67 |
2 |
| System Seals, Inc. | 5 |
2 |
| Tenneco Inc | 251 |
2 |
| Siemens Gamesa Renewable Energy A/S | 1895 |
2 |
| General Electric Company | 13807 |
1 |
| Deere & Company | 7638 |
1 |
| Eaton Corporation | 1815 |
1 |
| Robert Bosch GmbH | 42742 |
1 |
| Other owners | 21 |