- All sections
- B - Performing operationstransporting
- B61D - Body details or kinds of railway vehicles
- B61D 7/00 - Hopper cars
Patent holdings for IPC class B61D 7/00
Total number of patents in this class: 103
10-year publication summary
|
7
|
5
|
9
|
7
|
1
|
7
|
3
|
9
|
2
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| National Steel Car Limited | 150 |
14 |
| JAC Operations, Inc. | 52 |
13 |
| Drax Power Limited | 19 |
7 |
| Miner Enterprises, Inc. | 107 |
5 |
| Powerbrace Corporation | 40 |
5 |
| Trinity Industries, Inc. | 73 |
5 |
| Gunderson LLC | 60 |
4 |
| Bradken Resources Pty Limited | 152 |
3 |
| CRRC Qiqihar Rolling Stock Co., Ltd. | 111 |
3 |
| Herzog Railroad Services, Inc. | 63 |
3 |
| SunCoke Technology and Development LLC | 238 |
3 |
| Loram Technologies, Inc. | 56 |
3 |
| Aero Transportation Products, Inc. | 9 |
2 |
| Davanac Inc. | 3 |
2 |
| Plasser & Theurer Export Von Bahnbaumaschinen Gesellschaft m.b.H. | 418 |
2 |
| Technische Universitat Berlin | 355 |
2 |
| Trinity Rail Group, LLC | 110 |
2 |
| Bulk Ore Shuttle System Pty Ltd | 3 |
2 |
| Greenbrier Central, LLC | 16 |
2 |
| Amsted Rail Company, Inc. | 435 |
1 |
| Other owners | 20 |