- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16J - Pistons; cylinders; pressure vessels in general; sealings
- 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: 454
10-year publication summary
|
14
|
38
|
45
|
69
|
74
|
78
|
55
|
59
|
39
|
16
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NOK Corporation | 2108 |
118 |
| NTN Corporation | 5008 |
32 |
| Aktiebolaget SKF | 2700 |
26 |
| Schaeffler Technologies AG & Co. KG | 8880 |
13 |
| Carl Freudenberg KG | 1346 |
12 |
| Saint-Gobain Performance Plastics Corporation | 1028 |
12 |
| Eagle Industry Co., Ltd. | 1062 |
9 |
| Trelleborg Sealing Solutions Germany GmbH | 183 |
8 |
| Aktiebolaget SKF | 98 |
8 |
| Freudenberg-NOK General Partnership | 178 |
7 |
| NSK Ltd. | 2719 |
6 |
| Uchiyama Manufacturing Corp. | 119 |
6 |
| Caterpillar Inc. | 8877 |
5 |
| JTEKT Corporation | 2423 |
5 |
| Parker Intangibles LLC | 1237 |
5 |
| Robert Bosch GmbH | 40953 |
4 |
| ElringKlinger AG | 487 |
4 |
| Freudenberg Sealing Technologies S.A.S. di Externa Italia S.r.l.u | 19 |
4 |
| Halliburton Energy Services, Inc. | 20165 |
3 |
| Hitachi Automotive Systems, Ltd. | 3970 |
3 |
| Other owners | 164 |