- All sections
- B - Performing operationstransporting
- B61F - Rail vehicle suspensions, e.g. underframes, bogies or arrangements of wheel axlesrail vehicles for use on tracks of different widthpreventing derailing of rail vehicleswheel guards, obstruction removers or the like for rail vehicles
- B61F 3/04 - Types of bogies with more than one axle with driven axles or wheels
Patent holdings for IPC class B61F 3/04
Total number of patents in this class: 115
10-year publication summary
|
10
|
7
|
10
|
11
|
12
|
14
|
8
|
9
|
2
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Bombardier Transportation GmbH | 655 |
12 |
| Alstom Transport Technologies | 265 |
7 |
| Siemens Mobility Austria GmbH | 152 |
7 |
| Kawasaki Railcar Manufacturing Co., Ltd. | 178 |
7 |
| Parallel Systems, Inc. | 31 |
6 |
| Siemens Mobility GmbH | 1646 |
6 |
| Siemens AG | 24563 |
5 |
| Siemens AG Österreich | 315 |
5 |
| Alstom Holdings | 511 |
5 |
| Alstom Transport SA | 26 |
5 |
| General Electric Company | 17807 |
4 |
| Progress Rail Locomotive Inc. | 306 |
4 |
| BYD Company Limited | 4390 |
3 |
| CRRC Qingdao Sifang Co., Ltd. | 376 |
3 |
| SWS Engineering S.p.A. | 11 |
3 |
| VLR Technologies Limited | 7 |
3 |
| Korea Railroad Research Institute | 173 |
2 |
| Leitner S.p.A. | 82 |
2 |
| LUCCHINI RS S.p.A. | 29 |
2 |
| Stadler Rail AG | 34 |
2 |
| Other owners | 22 |