- All sections
- B - Performing operationstransporting
- B61D - Body details or kinds of railway vehicles
- B61D 7/30 - Opening or closing means controlled by means external to cars
Patent holdings for IPC class B61D 7/30
Total number of patents in this class: 24
10-year publication summary
|
1
|
4
|
0
|
0
|
0
|
2
|
3
|
0
|
1
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Ecofab Covers International Inc. | 32 |
4 |
| Concept Systems, Inc. | 5 |
2 |
| CRRC Qiqihar Rolling Stock Co., Ltd. | 117 |
2 |
| Herzog Railroad Services, Inc. | 72 |
2 |
| Miner Enterprises, Inc. | 102 |
2 |
| Powerbrace Corporation | 39 |
2 |
| Qiqihar Railway Rolling Stock Co., Ltd. | 45 |
2 |
| Siemens AG | 24011 |
1 |
| Lexair, Inc. | 17 |
1 |
| Structural Composites of Indiana Inc. | 2 |
1 |
| Railcar Innovations, LLC | 2 |
1 |
| Mineral Resources (equipment) Pty Ltd | 2 |
1 |
| CRRC Zhuzhou Rolling Stock Co., Ltd. | 17 |
1 |
| Science and Technology Development Branch, CRRC Yangtze Group Co., Ltd. | 11 |
1 |
| A. Stucki Compnay | 17 |
1 |
| Other owners | 0 |