- All sections
- B - Performing operationstransporting
- B61D - Body details or kinds of railway vehicles
- B61D 7/08 - Hopper cars with openings capable of discharging only outside the wheels
Patent holdings for IPC class B61D 7/08
Total number of patents in this class: 7
10-year publication summary
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0
|
1
|
0
|
1
|
0
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0
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2
|
1
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1
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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
|
|---|---|---|
| Nordic Minesteel Technologies Inc. | 39 |
3 |
| Trinity Rail Group, LLC | 109 |
3 |
| Unverferth Manufacturing Company, Inc. | 204 |
1 |
| Other owners | 0 |