- 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 5/12 - Bolster supports or mountings incorporating dampers
Patent holdings for IPC class B61F 5/12
Total number of patents in this class: 94
10-year publication summary
|
6
|
10
|
12
|
10
|
10
|
6
|
7
|
4
|
4
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Amsted Rail Company, Inc. | 439 |
21 |
| Nevis Industries LLC | 63 |
17 |
| National Steel Car Limited | 151 |
9 |
| Hitachi Automotive Systems, Ltd. | 3955 |
5 |
| Wabtec Holding Corp. | 374 |
4 |
| CRRC Qingdao Sifang Co., Ltd. | 384 |
3 |
| CRRC Qiqihar Rolling Stock Co., Ltd. | 111 |
3 |
| CRRC Tangshan Co., Ltd. | 260 |
3 |
| CRRC Zhuzhou Locomotive Co., Ltd | 261 |
3 |
| Transportation IP Holdings, LLC | 937 |
3 |
| Bombardier Transportation GmbH | 643 |
2 |
| BYD Company Limited | 5197 |
2 |
| Siemens Mobility GmbH | 1750 |
2 |
| Hitachi, Ltd. | 15588 |
1 |
| Leitner S.p.A. | 85 |
1 |
| Restruck Technologies Inc. | 2 |
1 |
| Restruk Technologies Inc. | 1 |
1 |
| Standard Car Truck Company | 16 |
1 |
| Starlite Co., Ltd. | 12 |
1 |
| Westinghouse Air Brake Technologies Corporation | 503 |
1 |
| Other owners | 10 |