- All sections
- B - Performing operationstransporting
- B61G - Couplings specially adapted for railway vehiclesdraught or buffing appliances specially adapted for railway vehicles
- B61G 9/20 - Draw-gear DetailsAccessories
Patent holdings for IPC class B61G 9/20
Total number of patents in this class: 64
10-year publication summary
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5
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6
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8
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10
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4
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6
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6
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1
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3
|
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
|
|---|---|---|
| Dellner Couplers AB | 110 |
8 |
| Voith Patent GmbH | 2771 |
7 |
| BYD Company Limited | 6271 |
4 |
| CRRC Qingdao Sifang Rolling Stock Research Institute Co., Ltd. | 83 |
4 |
| Qiqihar Railway Rolling Stock Co., Ltd. | 45 |
3 |
| Axtone SA | 27 |
3 |
| CRRC Zhuzhou Locomotive Co., Ltd | 264 |
3 |
| Amsted Rail Company, Inc. | 429 |
2 |
| ASF-Keystone, Inc. | 7 |
2 |
| CRRC Qingdao Sifang Co., Ltd. | 400 |
2 |
| CRRC Tangshan Co., Ltd. | 277 |
2 |
| McConway & Torley, LLC | 52 |
2 |
| Miner Enterprises, Inc. | 103 |
2 |
| Mudanjiang Jinyuan Coupler and Draft Gear Manufacturing Co., Ltd. | 7 |
2 |
| Strato, Inc. | 22 |
2 |
| Transportation IP Holdings, LLC | 977 |
2 |
| CRRC Nanjing Puzhen Co., Ltd. | 104 |
2 |
| Strato Technology Solutions, LLC | 31 |
2 |
| Bradken Resources Pty Limited | 148 |
1 |
| Pennsy Corporation | 44 |
1 |
| Other owners | 8 |