- All sections
- B - Performing operationstransporting
- B61G - Couplings specially adapted for railway vehiclesdraught or buffing appliances specially adapted for railway vehicles
- B61G 3/04 - Couplings comprising mating parts of similar shape or form which can be coupled without the use of any additional element or elements with coupling head having a guard arm on one side and a knuckle with angularly-disposed nose and tail portions pivoted to the other side thereof, the nose of the knuckle being the coupling part, and means to lock the knuckle in coupling position, e.g. "A.A.R." or "Janney" type
Patent holdings for IPC class B61G 3/04
Total number of patents in this class: 97
10-year publication summary
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6
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7
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3
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3
|
6
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0
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5
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2
|
1
|
1
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Bedloe Industries LLC | 71 |
33 |
| McConway & Torley, LLC | 56 |
16 |
| Pennsy Corporation | 43 |
13 |
| Amsted Rail Company, Inc. | 432 |
9 |
| New York Air Brake LLC | 267 |
4 |
| Bradken Resources Pty Limited | 149 |
3 |
| Qiqihar Railway Rolling Stock Co., Ltd. | 45 |
3 |
| Voith Patent GmbH | 2780 |
3 |
| O-Ring Sales & Service, Inc. | 6 |
3 |
| Mudanjiang Jinyuan Coupler and Draft Gear Manufacturing Co., Ltd. | 7 |
2 |
| Strato, Inc. | 27 |
2 |
| JAC Operations, Inc. | 55 |
1 |
| Miner Enterprises, Inc. | 106 |
1 |
| NZT Products, LLC | 1 |
1 |
| Rail 1520 IP Ltd. | 9 |
1 |
| Trinity North American Freight Car, Inc. | 50 |
1 |
| Victor Havenga Trust | 2 |
1 |
| Other owners | 0 |