- 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 5/30 - Axle-boxes mounted for movement under spring control in vehicle or bogie underframes
Patent holdings for IPC class B61F 5/30
Total number of patents in this class: 275
10-year publication summary
|
25
|
28
|
31
|
22
|
15
|
17
|
19
|
15
|
10
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 3045 |
45 |
| Kawasaki Railcar Manufacturing Co., Ltd. | 179 |
37 |
| Nevis Industries LLC | 63 |
19 |
| Bombardier Transportation GmbH | 648 |
13 |
| CRRC Tangshan Co., Ltd. | 254 |
11 |
| CRRC Qingdao Sifang Co., Ltd. | 377 |
8 |
| CRRC Qiqihar Rolling Stock Co., Ltd. | 105 |
7 |
| Siemens AG Österreich | 316 |
6 |
| Aktiebolaget SKF | 2913 |
6 |
| Siemens Mobility Austria GmbH | 164 |
6 |
| Amsted Rail Company, Inc. | 430 |
5 |
| National Steel Car Limited | 149 |
5 |
| Siemens Mobility GmbH | 1692 |
5 |
| CG Rail - Chinesisch-deutsches Forschungs- und Entwicklungszentrum für Bahn- und Verkehrstechnik Dresden GmbH | 19 |
5 |
| Firestone Industrial Products Company, LLC | 329 |
4 |
| Parallel Systems, Inc. | 32 |
4 |
| Sumitomo Riko Company Limited | 1041 |
4 |
| CRRC Zhuzhou Locomotive Co., Ltd | 247 |
4 |
| Mitsubishi Heavy Industries, Ltd. | 8601 |
3 |
| Siemens Transportation Systems GmbH & Co KG | 10 |
3 |
| Other owners | 75 |