- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16J - Pistons; cylinders; pressure vessels in general; sealings
- F16J 15/453 - Labyrinth packings characterised by the use of particular materials
Patent holdings for IPC class F16J 15/453
Total number of patents in this class: 51
10-year publication summary
|
3
|
3
|
9
|
2
|
4
|
5
|
1
|
5
|
3
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mitsubishi Heavy Industries, Ltd. | 8217 |
4 |
| NTN Corporation | 5008 |
3 |
| Aktiebolaget SKF | 2700 |
3 |
| Mitsubishi Hitachi Power Systems, Ltd. | 999 |
3 |
| Siemens AG | 24990 |
2 |
| Schaeffler Technologies AG & Co. KG | 8880 |
2 |
| Dresser-Rand Company | 233 |
2 |
| Goodrich Corporation | 2081 |
2 |
| Martin Koepsell | 2 |
2 |
| Rtx Corporation | 8674 |
2 |
| General Electric Company | 18133 |
1 |
| The Boeing Company | 19843 |
1 |
| United Technologies Corporation | 2328 |
1 |
| Pratt & Whitney Canada Corp. | 4215 |
1 |
| Mitsubishi Electric Corporation | 43934 |
1 |
| AB SKF | 193 |
1 |
| Beijing Yurunhua Science and Technology Co., Ltd. | 2 |
1 |
| Bombardier Transportation GmbH | 682 |
1 |
| Bruss Sealing Systems GmbH | 18 |
1 |
| Federal-Mogul Corporation | 362 |
1 |
| Other owners | 16 |