- 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 15/22 - Sealing means preventing entrance of dust or leakage of oil
Patent holdings for IPC class B61F 15/22
Total number of patents in this class: 46
10-year publication summary
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2
|
3
|
4
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12
|
3
|
4
|
5
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0
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0
|
0
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Amsted Rail Company, Inc. | 435 |
13 |
| Aktiebolaget SKF | 2856 |
8 |
| Schaeffler Technologies AG & Co. KG | 9471 |
5 |
| NTN Corporation | 4975 |
4 |
| The Timken Company | 383 |
4 |
| A. Stucki Co. | 47 |
3 |
| Consolidated Metco, Inc. | 157 |
2 |
| Ranger Bearings LLC | 2 |
2 |
| CRRC Qingdao Sifang Co., Ltd. | 376 |
1 |
| Nakanishi Metal Works Co., Ltd. | 110 |
1 |
| NOK Corporation | 2176 |
1 |
| Valeo Equipements Electriques Moteur | 1017 |
1 |
| CRRC Qishuyan Co., Ltd | 25 |
1 |
| Other owners | 0 |