- All sections
- B - Performing operationstransporting
- B61G - Couplings specially adapted for railway vehiclesdraught or buffing appliances specially adapted for railway vehicles
- B61G 9/22 - Supporting framework, e.g. cradlesSpring housings
Patent holdings for IPC class B61G 9/22
Total number of patents in this class: 38
10-year publication summary
|
3
|
1
|
5
|
4
|
5
|
3
|
1
|
3
|
2
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Dellner Couplers AB | 102 |
4 |
| Wabtec Holding Corp. | 370 |
4 |
| Siemens Mobility GmbH | 1692 |
3 |
| Strato Technology Solutions, LLC | 28 |
3 |
| A. Stucki Co. | 50 |
2 |
| Miner Enterprises, Inc. | 107 |
2 |
| Qiqihar Railway Rolling Stock Co., Ltd. | 45 |
2 |
| Strato, Inc. | 29 |
2 |
| Voith Patent GmbH | 2740 |
2 |
| CRRC Zhuzhou Locomotive Co., Ltd | 247 |
2 |
| Siemens AG | 24542 |
1 |
| Alstom Holdings | 604 |
1 |
| Applied Research Associates, Inc. | 182 |
1 |
| CRRC Qiqihar Rolling Stock Co., Ltd. | 105 |
1 |
| Gunderson LLC | 60 |
1 |
| Mudanjiang Jinyuan Coupler and Draft Gear Manufacturing Co., Ltd. | 7 |
1 |
| National Steel Car Limited | 149 |
1 |
| Pennsy Corporation | 37 |
1 |
| Qingdao Sifang Rolling Stock Research Institute Co., Ltd. | 18 |
1 |
| Qingdao SRI Technology Co., Ltd. | 18 |
1 |
| Other owners | 2 |