- All sections
- B - Performing operationstransporting
- B61G - Couplings specially adapted for railway vehiclesdraught or buffing appliances specially adapted for railway vehicles
- B61G 3/06 - Knuckle-locking devices
Patent holdings for IPC class B61G 3/06
Total number of patents in this class: 41
10-year publication summary
|
4
|
2
|
1
|
5
|
6
|
1
|
3
|
1
|
2
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Bedloe Industries LLC | 71 |
11 |
| Bradken Resources Pty Limited | 153 |
5 |
| Amsted Rail Company, Inc. | 430 |
4 |
| McConway & Torley, LLC | 55 |
4 |
| Pennsy Corporation | 37 |
3 |
| O-Ring Sales & Service, Inc. | 6 |
3 |
| CRRC Qiqihar Rolling Stock Co., Ltd. | 105 |
2 |
| CRRC Qingdao Sifang Rolling Stock Research Institute Co., Ltd. | 85 |
1 |
| Miner Enterprises, Inc. | 107 |
1 |
| Mudanjiang Jinyuan Coupler and Draft Gear Manufacturing Co., Ltd. | 7 |
1 |
| Qingdao SRI Technology Co., Ltd. | 18 |
1 |
| Qiqihar Railway Rolling Stock Co., Ltd. | 45 |
1 |
| Rail 1520 IP Ltd. | 9 |
1 |
| Fortescue Metals Group Ltd | 36 |
1 |
| Transportation IP Holdings, LLC | 923 |
1 |
| Victor Havenga Trust | 2 |
1 |
| Other owners | 0 |