- 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: 486
10-year publication summary
|
38
|
45
|
69
|
74
|
78
|
55
|
59
|
39
|
44
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NOK Corporation | 2166 |
119 |
| NTN Corporation | 4976 |
32 |
| Aktiebolaget SKF | 2839 |
26 |
| Saint-Gobain Performance Plastics Corporation | 1025 |
16 |
| Schaeffler Technologies AG & Co. KG | 9395 |
14 |
| Carl Freudenberg KG | 1354 |
12 |
| Eagle Industry Co., Ltd. | 1101 |
10 |
| NSK Ltd. | 2738 |
8 |
| Freudenberg-NOK General Partnership | 176 |
8 |
| Trelleborg Sealing Solutions Germany GmbH | 188 |
8 |
| Aktiebolaget SKF | 98 |
8 |
| Uchiyama Manufacturing Corp. | 124 |
7 |
| Caterpillar Inc. | 9166 |
6 |
| JTEKT Corporation | 2443 |
5 |
| Parker Intangibles LLC | 1197 |
5 |
| Robert Bosch GmbH | 41786 |
4 |
| ElringKlinger AG | 511 |
4 |
| Freudenberg Sealing Technologies S.A.S. di Externa Italia S.r.l.u | 19 |
4 |
| Trelleborg Sealing Solutions US, Inc. | 39 |
4 |
| BAL Seal Engineering, LLC | 106 |
4 |
| Other owners | 182 |