- 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 15/12 - Axle-boxes with roller, needle, or ball bearings
Patent holdings for IPC class B61F 15/12
Total number of patents in this class: 40
10-year publication summary
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4
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8
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7
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3
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1
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1
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1
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0
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0
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0
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Aktiebolaget SKF | 3171 |
11 |
| Amsted Rail Company, Inc. | 410 |
10 |
| NTN Corporation | 4935 |
6 |
| Schaeffler Technologies AG & Co. KG | 11272 |
3 |
| CRRC Qingdao Sifang Co., Ltd. | 414 |
2 |
| Korea Railroad Research Institute | 185 |
2 |
| Bombardier Transportation GmbH | 559 |
1 |
| Patentes Talgo, S.L. | 26 |
1 |
| Regal Beloit America, Inc. | 850 |
1 |
| Southwest Jiaotong University | 201 |
1 |
| CRRC Zhuzhou Locomotive Co., Ltd | 264 |
1 |
| Transportation IP Holdings, LLC | 1025 |
1 |
| Other owners | 0 |