- All sections
- B - Performing operations; transporting
- B61F - Rail vehicle suspensions, e.g. underframes, bogies or arrangements of wheel axles; rail vehicles for use on tracks of different width; preventing derailing of rail vehicles; wheel 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: 39
10-year publication summary
|
0
|
2
|
2
|
3
|
5
|
5
|
4
|
0
|
3
|
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
|
|---|---|---|
| JAC Operations, Inc. | 52 |
8 |
| National Steel Car Limited | 149 |
4 |
| Trinity Rail Group, LLC | 108 |
4 |
| Kiruna Wagon AB | 5 |
3 |
| Nippon Sharyo, Ltd. | 79 |
3 |
| Bombardier Transportation GmbH | 655 |
1 |
| Bradken Resources Pty Limited | 156 |
1 |
| CRRC Qingdao Sifang Co., Ltd. | 372 |
1 |
| CRRC Qiqihar Rolling Stock Co., Ltd. | 103 |
1 |
| CRRC Tangshan Co., Ltd. | 251 |
1 |
| Deutsche Bahn AG | 231 |
1 |
| Gunderson LLC | 59 |
1 |
| Trinity North American Freight Car, Inc. | 50 |
1 |
| CRRC Shandong Co., Ltd. | 24 |
1 |
| Vestas Wind Systems A/S | 3579 |
1 |
| CRRC Yangtze Co., Ltd. | 79 |
1 |
| Kawasaki Jukogyo Kabushiki Kaisha (trading as Kawasaki Heavy Industries, Ltd.) | 3015 |
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 | 2 |