- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16J - Pistonscylinderspressure vessels in generalsealings
- F16J 15/3232 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
Patent holdings for IPC class F16J 15/3232
Total number of patents in this class: 505
10-year publication summary
|
36
|
44
|
62
|
73
|
75
|
53
|
57
|
39
|
44
|
25
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NOK Corporation | 2222 |
124 |
| NTN Corporation | 4973 |
35 |
| Aktiebolaget SKF | 2953 |
28 |
| Saint-Gobain Performance Plastics Corporation | 1036 |
16 |
| Schaeffler Technologies AG & Co. KG | 9908 |
14 |
| Carl Freudenberg KG | 1367 |
12 |
| Eagle Industry Co., Ltd. | 1129 |
10 |
| Freudenberg-NOK General Partnership | 165 |
10 |
| NSK Ltd. | 2784 |
9 |
| Trelleborg Sealing Solutions Germany GmbH | 191 |
9 |
| Uchiyama Manufacturing Corp. | 125 |
8 |
| Aktiebolaget SKF | 98 |
8 |
| Caterpillar Inc. | 9579 |
5 |
| JTEKT Corporation | 2508 |
5 |
| Parker Intangibles LLC | 1162 |
5 |
| BAL Seal Engineering, LLC | 107 |
5 |
| Robert Bosch GmbH | 42705 |
4 |
| ElringKlinger AG | 539 |
4 |
| Freudenberg Sealing Technologies S.A.S. di Externa Italia S.r.l.u | 21 |
4 |
| Trelleborg Sealing Solutions US, Inc. | 38 |
4 |
| Other owners | 186 |