- 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 5/44 - Adjustment controlled by movements of vehicle body
Patent holdings for IPC class B61F 5/44
Total number of patents in this class: 31
10-year publication summary
|
3
|
3
|
3
|
3
|
0
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1
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1
|
0
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1
|
1
|
| 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.) | 3304 |
5 |
| Kawasaki Railcar Manufacturing Co., Ltd. | 186 |
5 |
| Nippon Steel & Sumitomo Metal Corporation | 1981 |
4 |
| Mitsubishi Heavy Industries, Ltd. | 9231 |
2 |
| Nippon Steel Corporation | 7050 |
2 |
| Siemens AG | 23913 |
1 |
| Mitsubishi Electric Corporation | 48409 |
1 |
| Bombardier Transportation GmbH | 559 |
1 |
| BYD Company Limited | 6629 |
1 |
| Knorr-Bremse Systeme fur Schienenfahrzeuge GmbH | 571 |
1 |
| Korea Railroad Research Institute | 184 |
1 |
| Nippon Thompson Co., Ltd. | 231 |
1 |
| Sumitomo Metal Industries, Ltd. | 306 |
1 |
| Mitsubishi Heavy Industries Engineering, Ltd. | 194 |
1 |
| Siemens Mobility Austria GmbH | 196 |
1 |
| Rosso Co., Ltd. | 6 |
1 |
| Tram Research Limited | 2 |
1 |
| Changchun Sujian New Technology Development Co., Ltd. | 1 |
1 |
| Other owners | 0 |