- 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: 85
10-year publication summary
|
11
|
8
|
9
|
12
|
7
|
9
|
8
|
2
|
3
|
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. | 410 |
15 |
| CRRC Zhuzhou Locomotive Co., Ltd | 264 |
7 |
| Central South University | 499 |
6 |
| Shenzhen Cansinga Technology Co., Ltd | 8 |
5 |
| Bombardier Transportation GmbH | 559 |
4 |
| CRRC Tangshan Co., Ltd. | 282 |
4 |
| Siemens Mobility Austria GmbH | 196 |
4 |
| Kawasaki Railcar Manufacturing Co., Ltd. | 186 |
4 |
| Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 3304 |
3 |
| CRRC Changchun Railway Vehicles Co., Ltd. | 281 |
3 |
| Tangshan Railway Vehicle Co., Ltd. | 29 |
2 |
| Siemens Mobility GmbH | 1896 |
2 |
| CRRC Nanjing Puzhen Co., Ltd. | 104 |
2 |
| Rxd - Research Exchange Development AB | 8 |
2 |
| Siemens AG | 23913 |
1 |
| Hitachi, Ltd. | 16221 |
1 |
| Hyundai Motor Company | 25034 |
1 |
| Siemens AG Österreich | 318 |
1 |
| Applied Research Associates, Inc. | 202 |
1 |
| Dellner Couplers AB | 113 |
1 |
| Other owners | 16 |