- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16J - Pistons; cylinders; pressure vessels in general; sealings
- F16J 15/3204 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
Patent holdings for IPC class F16J 15/3204
Total number of patents in this class: 439
10-year publication summary
|
8
|
47
|
52
|
66
|
48
|
57
|
58
|
58
|
42
|
18
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NOK Corporation | 2108 |
125 |
| NTN Corporation | 5008 |
35 |
| Aktiebolaget SKF | 2700 |
15 |
| Carl Freudenberg KG | 1346 |
9 |
| Saint-Gobain Performance Plastics Corporation | 1028 |
9 |
| NSK Ltd. | 2719 |
8 |
| Trelleborg Sealing Solutions Germany GmbH | 183 |
7 |
| Denso Corporation | 23338 |
6 |
| KYB Corporation | 1278 |
6 |
| Caterpillar Inc. | 8877 |
5 |
| Schaeffler Technologies AG & Co. KG | 8880 |
5 |
| Nifco Inc. | 1103 |
5 |
| Eagle Industry Co., Ltd. | 1062 |
4 |
| Kalsi Engineering, Inc. | 50 |
4 |
| NOF Corporation | 194 |
4 |
| SEW-EURODRIVE GmbH & Co. KG | 1816 |
4 |
| JTEKT Corporation | 2423 |
3 |
| ADVICS Co., Ltd. | 1182 |
3 |
| Consolidated Metco, Inc. | 145 |
3 |
| EagleBurgmann Germany GmbH & Co. KG | 314 |
3 |
| Other owners | 176 |