- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16J - Pistons; cylinders; pressure vessels in general; sealings
- F16J 15/3236 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips with at least one lip for each surface, e.g. U-cup packings
Patent holdings for IPC class F16J 15/3236
Total number of patents in this class: 217
10-year publication summary
|
10
|
29
|
44
|
24
|
33
|
16
|
26
|
16
|
23
|
3
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Saint-Gobain Performance Plastics Corporation | 1028 |
23 |
| NOK Corporation | 2108 |
16 |
| Trelleborg Sealing Solutions Germany GmbH | 183 |
9 |
| Schaeffler Technologies AG & Co. KG | 8880 |
8 |
| ElringKlinger AG | 487 |
8 |
| BAL Seal Engineering, LLC | 106 |
8 |
| Carl Freudenberg KG | 1346 |
7 |
| Robert Bosch GmbH | 40953 |
6 |
| Hitachi Astemo, Ltd. | 5618 |
5 |
| Caterpillar Inc. | 8877 |
4 |
| NTN Corporation | 5008 |
4 |
| Fisher Controls International LLC | 1520 |
4 |
| KYB Corporation | 1278 |
4 |
| ETI Group | 10 |
4 |
| Hitachi Automotive Systems, Ltd. | 3970 |
3 |
| Aktiebolaget SKF | 2700 |
3 |
| FBD Partnership, LP | 37 |
3 |
| Nifco Inc. | 1103 |
3 |
| SRI Energy Inc. | 28 |
3 |
| Schlumberger Technology Corporation | 9690 |
2 |
| Other owners | 90 |