- 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 15/20 - Axle-boxes Details
Patent holdings for IPC class B61F 15/20
Total number of patents in this class: 63
10-year publication summary
|
12
|
7
|
9
|
3
|
4
|
3
|
4
|
2
|
3
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Aktiebolaget SKF | 3054 |
16 |
| Kawasaki Railcar Manufacturing Co., Ltd. | 183 |
6 |
| Schaeffler Technologies AG & Co. KG | 10579 |
5 |
| Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 3155 |
4 |
| Amsted Rail Company, Inc. | 429 |
3 |
| Siemens Mobility GmbH | 1805 |
3 |
| NVH Technology LLC | 22 |
3 |
| CRRC Meishan Co., Ltd. | 24 |
2 |
| Aktiebolaget SKF | 100 |
2 |
| Progress Rail Services Corp | 222 |
1 |
| NTN-SNR Roulements | 85 |
1 |
| AB SKF | 147 |
1 |
| Bombardier Transportation GmbH | 633 |
1 |
| BYD Company Limited | 6041 |
1 |
| CRRC Qingdao Sifang Co., Ltd. | 395 |
1 |
| Gutehoffnungshutte Radsatz GmbH | 11 |
1 |
| Nippon Steel Corporation | 6616 |
1 |
| Patentes Talgo, S.L. | 27 |
1 |
| Pennsy Corporation | 45 |
1 |
| Schaeffler KG | 576 |
1 |
| Other owners | 8 |