- All sections
- B - Performing operationstransporting
- B61L - Guiding railway trafficensuring the safety of railway traffic
- B61L 23/18 - Control, warning or like safety means along the route or between vehicles or trains for controlling traffic in one direction only automatically operated specially adapted for maintaining a safe distance between vehicles or trains depending upon speed and traffic density
Patent holdings for IPC class B61L 23/18
Total number of patents in this class: 31
10-year publication summary
|
4
|
0
|
5
|
1
|
3
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3
|
1
|
3
|
2
|
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
|
|---|---|---|
| BNSF Railway Company | 490 |
4 |
| BYD Company Limited | 5903 |
3 |
| Traffic Control Technology Co., Ltd | 31 |
3 |
| Mitsubishi Electric Corporation | 47352 |
2 |
| Beijing Jiaotong University | 166 |
2 |
| CRRC Qingdao Sifang Co., Ltd. | 395 |
2 |
| Kyosan Electric Mfg. Co., Ltd. | 177 |
2 |
| Railserve, Inc. | 51 |
2 |
| Wabtec Holding Corp. | 357 |
2 |
| Hitachi, Ltd. | 15800 |
1 |
| Carnegie Mellon University | 1596 |
1 |
| CRRC Tangshan Co., Ltd. | 268 |
1 |
| Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR) | 17 |
1 |
| The Nippon Signal Co., Ltd. | 57 |
1 |
| Toshiba Infrastructure Systems & Solutions Corporation | 699 |
1 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6221 |
1 |
| Crsc Research & Design Institute Group Co., Ltd. | 153 |
1 |
| Itsr (Hong Kong) Limited | 1 |
1 |
| Other owners | 0 |