- 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: 80
10-year publication summary
|
2
|
3
|
9
|
6
|
8
|
6
|
8
|
2
|
1
|
8
|
| 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 | 123 |
6 |
| Halliburton Energy Services, Inc. | 21019 |
5 |
| Pratt & Whitney Canada Corp. | 4865 |
2 |
| NTN Corporation | 4974 |
2 |
| Aker Subsea AS | 128 |
2 |
| Amsted Rail Company, Inc. | 441 |
2 |
| EXCO Technologies Limited | 54 |
2 |
| John Crane Inc. | 99 |
2 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2880 |
2 |
| Saint-Gobain Performance Plastics Corporation | 1036 |
2 |
| Technetics Group LLC | 39 |
2 |
| Kerr Machine Co. | 154 |
2 |
| Nuovo Pignone Tecnologie S.r.l. | 1023 |
2 |
| Rtx Corporation | 9529 |
2 |
| Baker Hughes Incorporated | 5230 |
1 |
| ExxonMobil Research And Engineering Company | 2551 |
1 |
| Air Products and Chemicals, Inc. | 1450 |
1 |
| ABB Schweiz AG | 7127 |
1 |
| ABB Turbo Systems AG | 92 |
1 |
| Other owners | 33 |