- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16J - Pistons; cylinders; pressure vessels in general; sealings
- F16J 15/3284 - Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
Patent holdings for IPC class F16J 15/3284
Total number of patents in this class: 364
10-year publication summary
4
|
32
|
46
|
43
|
50
|
61
|
59
|
51
|
53
|
18
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
NOK Corporation | 2108 |
33 |
Saint-Gobain Performance Plastics Corporation | 1028 |
23 |
Carl Freudenberg KG | 1346 |
21 |
Aktiebolaget SKF | 2700 |
14 |
Rtx Corporation | 8674 |
10 |
Caterpillar Inc. | 8877 |
9 |
ElringKlinger AG | 487 |
9 |
Trelleborg Sealing Solutions Germany GmbH | 183 |
9 |
Halliburton Energy Services, Inc. | 20165 |
8 |
Schaeffler Technologies AG & Co. KG | 8880 |
8 |
NTN Corporation | 5008 |
6 |
Eagle Industry Co., Ltd. | 1062 |
6 |
ElringKlinger Kunststofftechnik GmbH | 24 |
5 |
Rolls-Royce Corporation | 1686 |
5 |
Valqua, Ltd. | 252 |
5 |
Raytheon Company | 8535 |
4 |
Schlumberger Technology Corporation | 9690 |
3 |
Freudenberg Sealing Technologies S.A.S. di Externa Italia S.r.l.u | 19 |
3 |
Goodrich Actuation Systems Limited | 221 |
3 |
Flowserve KSM Co Ltd | 6 |
3 |
Other owners | 177 |