- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16J - Pistons; cylinders; pressure vessels in general; sealings
- 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: 114
10-year publication summary
|
6
|
10
|
13
|
29
|
12
|
19
|
7
|
8
|
5
|
4
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NOK Corporation | 2108 |
46 |
| Trelleborg Sealing Solutions Germany GmbH | 183 |
8 |
| Aktiebolaget SKF | 2700 |
7 |
| Kalsi Engineering, Inc. | 50 |
6 |
| Carl Freudenberg KG | 1346 |
3 |
| Freudenberg-NOK General Partnership | 178 |
3 |
| KACO GmbH + Co. KG | 48 |
3 |
| NOF Corporation | 194 |
3 |
| Caterpillar Inc. | 8877 |
2 |
| Stein Seal Company | 69 |
2 |
| Siemens Gamesa Renewable Energy A/S | 1647 |
2 |
| General Electric Company | 18133 |
1 |
| Deere & Company | 6845 |
1 |
| Eaton Corporation | 1839 |
1 |
| Robert Bosch GmbH | 40953 |
1 |
| ZF Friedrichshafen AG | 6820 |
1 |
| Rolls-Royce PLC | 2944 |
1 |
| NTN Corporation | 5008 |
1 |
| Audi AG | 7153 |
1 |
| Bruss Sealing Systems GmbH | 18 |
1 |
| Other owners | 20 |