- All sections
- B - Performing operationstransporting
- B61D - Body details or kinds of railway vehicles
- B61D 7/16 - Closure elements for discharge openings
Patent holdings for IPC class B61D 7/16
Total number of patents in this class: 30
10-year publication summary
|
5
|
3
|
5
|
1
|
4
|
2
|
2
|
4
|
0
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| National Steel Car Limited | 149 |
5 |
| Gunderson LLC | 60 |
4 |
| Miner Enterprises, Inc. | 107 |
3 |
| Nordic Minesteel Technologies Inc. | 36 |
3 |
| Powerbrace Corporation | 40 |
2 |
| Greenbrier Central, LLC | 16 |
2 |
| Aero Transportation Products, Inc. | 9 |
1 |
| Bradken Resources Pty Limited | 153 |
1 |
| CSR Yangtze Co., Ltd. | 25 |
1 |
| Ecofab Covers International Inc. | 32 |
1 |
| Sullair, LLC | 40 |
1 |
| Trinity North American Freight Car, Inc. | 50 |
1 |
| Unverferth Manufacturing Company, Inc. | 191 |
1 |
| CRRC Yangtze Corporation Limited | 5 |
1 |
| Railcar Innovations, LLC | 2 |
1 |
| CRRC Yangtze Co., Ltd. | 84 |
1 |
| A. Stucki Compnay | 22 |
1 |
| Other owners | 0 |