- 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 5/50 - Other details
Patent holdings for IPC class B61F 5/50
Total number of patents in this class: 164
10-year publication summary
|
12
|
15
|
15
|
13
|
12
|
8
|
17
|
14
|
8
|
9
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nevis Industries LLC | 63 |
13 |
| CRRC Qingdao Sifang Co., Ltd. | 384 |
11 |
| CRRC Tangshan Co., Ltd. | 261 |
11 |
| BYD Company Limited | 5207 |
7 |
| CRRC Qiqihar Rolling Stock Co., Ltd. | 111 |
7 |
| Bombardier Transportation GmbH | 643 |
6 |
| Stadler Rail AG | 36 |
6 |
| Siemens Mobility GmbH | 1750 |
5 |
| Chongqing CRRC Railway Vehicles Co., Ltd. | 6 |
5 |
| Siemens AG | 24353 |
4 |
| Alstom Holdings | 614 |
4 |
| Amsted Rail Company, Inc. | 439 |
4 |
| CRRC Zhuzhou Locomotive Co., Ltd | 261 |
4 |
| Mitsubishi Heavy Industries, Ltd. | 8813 |
3 |
| Qiqihar Railway Rolling Stock Co., Ltd. | 45 |
3 |
| Standard Car Truck Company | 16 |
3 |
| Transportation IP Holdings, LLC | 939 |
3 |
| Central South University | 450 |
2 |
| Changchun Railway Vehicles Co., Ltd. | 39 |
2 |
| Kasgro Rail Corp. | 14 |
2 |
| Other owners | 59 |