- All sections
- F - Mechanical engineeringlightingheatingweaponsblasting
- F16J - Pistonscylinderspressure vessels in generalsealings
- F16J 15/28 - Sealings between relatively-moving surfaces with stuffing-boxes for rigid sealing rings with sealing rings made of metal
Patent holdings for IPC class F16J 15/28
Total number of patents in this class: 74
10-year publication summary
|
3
|
3
|
11
|
7
|
11
|
6
|
9
|
2
|
1
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hoerbiger Wien GmbH | 132 |
7 |
| Burckhardt Compression AG | 121 |
6 |
| Halliburton Energy Services, Inc. | 20901 |
5 |
| Pratt & Whitney Canada Corp. | 4757 |
2 |
| Aker Subsea AS | 129 |
2 |
| Amsted Rail Company, Inc. | 435 |
2 |
| EXCO Technologies Limited | 54 |
2 |
| John Crane Inc. | 99 |
2 |
| Saint-Gobain Performance Plastics Corporation | 1031 |
2 |
| Technetics Group LLC | 39 |
2 |
| Nuovo Pignone Tecnologie S.r.l. | 978 |
2 |
| Rtx Corporation | 9385 |
2 |
| Baker Hughes Incorporated | 5241 |
1 |
| NTN Corporation | 4976 |
1 |
| ABB Schweiz AG | 6976 |
1 |
| ABB Turbo Systems AG | 95 |
1 |
| Toyota Industries Corporation | 1117 |
1 |
| Areva NP | 214 |
1 |
| BAL Seal Engineering Co., Inc. | 21 |
1 |
| BorgWarner Inc. | 2599 |
1 |
| Other owners | 30 |