- 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: 278
10-year publication summary
|
28
|
31
|
22
|
15
|
17
|
19
|
16
|
11
|
9
|
5
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 3259 |
45 |
| Kawasaki Railcar Manufacturing Co., Ltd. | 184 |
38 |
| Nevis Industries LLC | 64 |
20 |
| CRRC Tangshan Co., Ltd. | 279 |
12 |
| Bombardier Transportation GmbH | 571 |
10 |
| CRRC Qingdao Sifang Co., Ltd. | 405 |
8 |
| CRRC Qiqihar Rolling Stock Co., Ltd. | 117 |
7 |
| Siemens AG Österreich | 318 |
6 |
| Aktiebolaget SKF | 3128 |
6 |
| Siemens Mobility Austria GmbH | 192 |
6 |
| CG Rail - Chinesisch-deutsches Forschungs- und Entwicklungszentrum für Bahn- und Verkehrstechnik Dresden GmbH | 20 |
6 |
| Amsted Rail Company, Inc. | 423 |
5 |
| National Steel Car Limited | 149 |
5 |
| Parallel Systems, Inc. | 40 |
5 |
| Sumitomo Riko Company Limited | 1139 |
5 |
| Siemens Mobility GmbH | 1873 |
5 |
| Firestone Industrial Products Company, LLC | 324 |
4 |
| CRRC Zhuzhou Locomotive Co., Ltd | 264 |
4 |
| Mitsubishi Heavy Industries, Ltd. | 9128 |
3 |
| Alstom Holdings | 630 |
3 |
| Other owners | 75 |