- All sections
- B - Performing operationstransporting
- B61D - Body details or kinds of railway vehicles
- B61D 7/22 - Sealing means thereof
Patent holdings for IPC class B61D 7/22
Total number of patents in this class: 35
10-year publication summary
|
4
|
2
|
0
|
1
|
0
|
5
|
1
|
0
|
0
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| National Steel Car Limited | 149 |
10 |
| Trinity Rail Group, LLC | 109 |
4 |
| FreightCar America, Inc. | 4 |
3 |
| JAC Operations, Inc. | 57 |
3 |
| Trinity North American Freight Car, Inc. | 50 |
3 |
| Chevron Phillips Chemical Company LP | 1861 |
2 |
| CRRC Qiqihar Rolling Stock Co., Ltd. | 117 |
2 |
| A. Stucki Co. | 76 |
1 |
| Bradken Resources Pty Limited | 147 |
1 |
| P.E.I. Protezioni Elaborazioni Industriali S.r.l. (fiscal Code 02894991203 and VAT Number 02894991203) | 8 |
1 |
| Qiqihar Railway Rolling Stock Co., Ltd. | 45 |
1 |
| CRRC Meishan Co., Ltd. | 27 |
1 |
| Railcar Innovations, LLC | 2 |
1 |
| Greenbrier Central, LLC | 16 |
1 |
| Irex Co., Ltd. | 3 |
1 |
| Other owners | 0 |