- 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
|
7
|
10
|
11
|
12
|
14
|
8
|
9
|
2
|
2
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Bombardier Transportation GmbH | 572 |
11 |
| Siemens Mobility Austria GmbH | 192 |
8 |
| Alstom Holdings | 630 |
7 |
| Parallel Systems, Inc. | 40 |
7 |
| Siemens Mobility GmbH | 1868 |
7 |
| Kawasaki Railcar Manufacturing Co., Ltd. | 184 |
7 |
| Siemens AG | 24033 |
5 |
| Siemens AG Österreich | 318 |
5 |
| Alstom Transport SA | 31 |
5 |
| General Electric Company | 13888 |
4 |
| Progress Rail Locomotive Inc. | 338 |
4 |
| BYD Company Limited | 6463 |
3 |
| CRRC Qingdao Sifang Co., Ltd. | 403 |
3 |
| Stadler Rail AG | 36 |
3 |
| SWS Engineering S.p.A. | 11 |
3 |
| VLR Technologies Limited | 7 |
3 |
| Amsted Rail Company, Inc. | 423 |
2 |
| Korea Railroad Research Institute | 185 |
2 |
| Leitner S.p.A. | 85 |
2 |
| Sueddeutsche Gelenkscheibenfabrik GmbH & Co. KG | 36 |
2 |
| Other owners | 22 |