- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16J - Pistons; cylinders; pressure vessels in general; sealings
- 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: 70
10-year publication summary
|
6
|
3
|
3
|
11
|
7
|
11
|
6
|
9
|
1
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hoerbiger Wien GmbH | 123 |
7 |
| Burckhardt Compression AG | 116 |
6 |
| Halliburton Energy Services, Inc. | 20165 |
4 |
| Pratt & Whitney Canada Corp. | 4215 |
2 |
| Aker Subsea AS | 130 |
2 |
| Amsted Rail Company, Inc. | 432 |
2 |
| EXCO Technologies Limited | 53 |
2 |
| John Crane Inc. | 93 |
2 |
| Saint-Gobain Performance Plastics Corporation | 1028 |
2 |
| Technetics Group LLC | 39 |
2 |
| Nuovo Pignone Tecnologie S.r.l. | 789 |
2 |
| Flowserve Pte. Ltd | 216 |
2 |
| Rtx Corporation | 8674 |
2 |
| Baker Hughes Incorporated | 5689 |
1 |
| ExxonMobil Research And Engineering Company | 2830 |
1 |
| Air Products and Chemicals, Inc. | 1448 |
1 |
| ABB Schweiz AG | 6321 |
1 |
| ABB Turbo Systems AG | 110 |
1 |
| Toyota Industries Corporation | 1010 |
1 |
| Areva NP | 228 |
1 |
| Other owners | 26 |