- 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 5/24 - Means for damping or minimising the canting, skewing, pitching, or plunging movements of the underframes
Patent holdings for IPC class B61F 5/24
Total number of patents in this class: 222
10-year publication summary
|
18
|
20
|
29
|
27
|
20
|
11
|
13
|
12
|
7
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| KYB Corporation | 1349 |
28 |
| CRRC Qingdao Sifang Co., Ltd. | 377 |
18 |
| Kayaba Industry Co., Ltd. | 358 |
15 |
| Bombardier Transportation GmbH | 648 |
14 |
| Hitachi, Ltd. | 15383 |
10 |
| Siemens AG Österreich | 316 |
9 |
| Hitachi Automotive Systems, Ltd. | 3958 |
8 |
| Nippon Steel & Sumitomo Metal Corporation | 1987 |
7 |
| Mitsubishi Heavy Industries Engineering, Ltd. | 196 |
6 |
| Nippon Steel Corporation | 6136 |
5 |
| Zhuzhou Times New Material Technology Co., Ltd. | 64 |
5 |
| Siemens Mobility GmbH | 1697 |
5 |
| Amsted Rail Company, Inc. | 430 |
4 |
| CRRC Tangshan Co., Ltd. | 254 |
4 |
| Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 3049 |
4 |
| Siemens Mobility Austria GmbH | 164 |
4 |
| Alstom Holdings | 604 |
3 |
| BYD Company Limited | 4713 |
3 |
| Central Japan Railway Company | 115 |
3 |
| Hyperloop Technologies, Inc. | 182 |
3 |
| Other owners | 64 |