- 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 19/04 - Bumpers or like collision guards
Patent holdings for IPC class B61F 19/04
Total number of patents in this class: 80
10-year publication summary
|
4
|
11
|
8
|
9
|
12
|
7
|
8
|
8
|
1
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| CRRC Qingdao Sifang Co., Ltd. | 378 |
15 |
| CRRC Zhuzhou Locomotive Co., Ltd | 248 |
7 |
| Bombardier Transportation GmbH | 648 |
6 |
| Central South University | 430 |
6 |
| Shenzhen Cansinga Technology Co., Ltd | 8 |
5 |
| CRRC Tangshan Co., Ltd. | 254 |
4 |
| Siemens Mobility Austria GmbH | 165 |
4 |
| Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 3050 |
3 |
| Kawasaki Railcar Manufacturing Co., Ltd. | 179 |
3 |
| Tangshan Railway Vehicle Co., Ltd. | 29 |
2 |
| Siemens Mobility GmbH | 1698 |
2 |
| CRRC Changchun Railway Vehicles Co., Ltd. | 235 |
2 |
| Rxd - Research Exchange Development AB | 8 |
2 |
| Siemens AG | 24563 |
1 |
| Hitachi, Ltd. | 15402 |
1 |
| Hyundai Motor Company | 21451 |
1 |
| Siemens AG Österreich | 315 |
1 |
| Dellner Couplers AB | 103 |
1 |
| Korea Railroad Research Institute | 177 |
1 |
| Nippon Sharyo, Ltd. | 79 |
1 |
| Other owners | 12 |