- 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 1/08 - Underframes Details
Patent holdings for IPC class B61F 1/08
Total number of patents in this class: 121
10-year publication summary
|
7
|
8
|
10
|
10
|
13
|
10
|
5
|
11
|
6
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| CRRC Qingdao Sifang Co., Ltd. | 392 |
14 |
| CRRC Tangshan Co., Ltd. | 264 |
7 |
| CRRC Qiqihar Rolling Stock Co., Ltd. | 112 |
6 |
| CRRC Nanjing Puzhen Co., Ltd. | 101 |
6 |
| Bombardier Transportation GmbH | 634 |
5 |
| Siemens Mobility GmbH | 1784 |
5 |
| CRRC Zhuzhou Locomotive Co., Ltd | 264 |
5 |
| CRRC Changchun Railway Vehicles Co., Ltd. | 274 |
5 |
| Hitachi, Ltd. | 15771 |
4 |
| Siemens AG Österreich | 317 |
4 |
| Nippon Sharyo, Ltd. | 79 |
4 |
| Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 3123 |
4 |
| Siemens Mobility Austria GmbH | 178 |
4 |
| Kawasaki Railcar Manufacturing Co., Ltd. | 183 |
4 |
| Drax Power Limited | 19 |
3 |
| JAC Operations, Inc. | 55 |
3 |
| National Steel Car Limited | 147 |
3 |
| Trinity Rail Group, LLC | 108 |
3 |
| CRRC Shandong Co., Ltd. | 32 |
3 |
| Siemens AG | 24293 |
2 |
| Other owners | 27 |