- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16J - Pistons; cylinders; pressure vessels in general; sealings
- F16J 15/3212 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip provided with tension elements, e.g. elastic rings with metal springs
Patent holdings for IPC class F16J 15/3212
Total number of patents in this class: 167
10-year publication summary
|
21
|
19
|
19
|
19
|
19
|
21
|
14
|
25
|
10
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NOK Corporation | 2162 |
25 |
| Saint-Gobain Performance Plastics Corporation | 1025 |
22 |
| Trelleborg Sealing Solutions Germany GmbH | 188 |
10 |
| BAL Seal Engineering, LLC | 106 |
10 |
| Carl Freudenberg KG | 1353 |
6 |
| Schaeffler Technologies AG & Co. KG | 9364 |
5 |
| Gardner Denver Deutschland GmbH | 61 |
5 |
| ElringKlinger AG | 512 |
4 |
| Amsted Rail Company, Inc. | 437 |
3 |
| Andritz Oy | 280 |
3 |
| ElringKlinger Kunststofftechnik GmbH | 26 |
3 |
| Cyclam | 3 |
3 |
| Pratt & Whitney Canada Corp. | 4434 |
2 |
| Caterpillar Inc. | 9149 |
2 |
| Aktiebolaget SKF | 2834 |
2 |
| Cross Manufacturing Company (1938) Limited | 28 |
2 |
| Eagle Industry Co., Ltd. | 1099 |
2 |
| Fisher Controls International LLC | 1515 |
2 |
| Kaydon Ring & Seal, Inc. | 20 |
2 |
| Tenute S.r.l. | 6 |
2 |
| Other owners | 52 |