- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16J - Pistons; cylinders; pressure vessels in general; sealings
- F16J 15/38 - Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member sealed by a packing
Patent holdings for IPC class F16J 15/38
Total number of patents in this class: 112
10-year publication summary
|
7
|
7
|
5
|
7
|
8
|
9
|
4
|
6
|
6
|
3
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Eagle Industry Co., Ltd. | 1062 |
18 |
| A.W. Chesterton Company | 80 |
9 |
| John Crane Inc. | 93 |
8 |
| EagleBurgmann Germany GmbH & Co. KG | 314 |
7 |
| Halliburton Energy Services, Inc. | 20165 |
6 |
| Siemens AG | 24990 |
3 |
| Pratt & Whitney Canada Corp. | 4215 |
3 |
| EagleBurgmann Japan Co., Ltd. | 52 |
3 |
| AES Engineering Ltd. | 95 |
2 |
| Bell Helicopter Textron Inc. | 1122 |
2 |
| Burgmann Industries GmbH & Co. KG | 15 |
2 |
| Freudenberg-NOK General Partnership | 178 |
2 |
| KACO GmbH + Co. KG | 48 |
2 |
| Magnetic Seal Corp. | 2 |
2 |
| Meccanotecnica Umbra S.p.A. | 24 |
2 |
| Flowserve Pte. Ltd | 216 |
2 |
| Siemens Energy Global GmbH & Co. KG | 2775 |
2 |
| Honeywell International Inc. | 13799 |
1 |
| Denso Corporation | 23338 |
1 |
| Caterpillar Inc. | 8877 |
1 |
| Other owners | 34 |