- 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: 224
10-year publication summary
|
29
|
44
|
24
|
33
|
16
|
26
|
17
|
24
|
8
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Saint-Gobain Performance Plastics Corporation | 1025 |
23 |
| NOK Corporation | 2166 |
17 |
| Trelleborg Sealing Solutions Germany GmbH | 188 |
9 |
| Schaeffler Technologies AG & Co. KG | 9395 |
8 |
| ElringKlinger AG | 511 |
8 |
| BAL Seal Engineering, LLC | 106 |
8 |
| Carl Freudenberg KG | 1354 |
7 |
| Robert Bosch GmbH | 41786 |
6 |
| Hitachi Astemo, Ltd. | 6091 |
5 |
| Caterpillar Inc. | 9166 |
4 |
| NTN Corporation | 4976 |
4 |
| Fisher Controls International LLC | 1515 |
4 |
| KYB Corporation | 1325 |
4 |
| SRI Energy Inc. | 31 |
4 |
| ETI Group | 13 |
4 |
| Hitachi Automotive Systems, Ltd. | 3962 |
3 |
| Aktiebolaget SKF | 2839 |
3 |
| Nifco Inc. | 1106 |
3 |
| Schlumberger Technology Corporation | 10263 |
2 |
| Illinois Tool Works Inc. | 11399 |
2 |
| Other owners | 96 |