- 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 1/02 - Underframes with a single central sill
Patent holdings for IPC class B61F 1/02
Total number of patents in this class: 40
10-year publication summary
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2
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2
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3
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5
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5
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4
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0
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3
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0
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1
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JAC Operations, Inc. | 57 |
9 |
| Trinity Rail Group, LLC | 109 |
5 |
| National Steel Car Limited | 149 |
4 |
| Kiruna Wagon AB | 5 |
3 |
| Nippon Sharyo, Ltd. | 77 |
3 |
| Bombardier Transportation GmbH | 571 |
1 |
| Bradken Resources Pty Limited | 147 |
1 |
| CRRC Qingdao Sifang Co., Ltd. | 405 |
1 |
| CRRC Qiqihar Rolling Stock Co., Ltd. | 117 |
1 |
| CRRC Tangshan Co., Ltd. | 279 |
1 |
| Deutsche Bahn AG | 231 |
1 |
| Gunderson LLC | 73 |
1 |
| Trinity North American Freight Car, Inc. | 50 |
1 |
| CRRC Shandong Co., Ltd. | 34 |
1 |
| Vestas Wind Systems A/S | 3796 |
1 |
| CRRC Yangtze Co., Ltd. | 84 |
1 |
| Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 3259 |
1 |
| Aktsionernoe Obshchestvo "ruzaevskij Zavod Khimicheskogo Mashinostroeniya" (ao "ruzkhimmash") | 2 |
1 |
| Rail Cargo Wagon - Austria GmbH | 1 |
1 |
| United Group Rail Services Limited | 5 |
1 |
| Other owners | 1 |