- All sections
- B - Performing operationstransporting
- B61L - Guiding railway trafficensuring the safety of railway traffic
- B61L 21/10 - Arrangements for trains which are closely following one another
Patent holdings for IPC class B61L 21/10
Total number of patents in this class: 52
10-year publication summary
|
7
|
4
|
11
|
8
|
1
|
5
|
3
|
4
|
1
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| BNSF Railway Company | 369 |
11 |
| Siemens Mobility GmbH | 1644 |
9 |
| Siemens AG | 24568 |
6 |
| Hyperloop Technologies, Inc. | 182 |
5 |
| New York Air Brake LLC | 262 |
3 |
| Toshiba Corporation | 12060 |
2 |
| Siemens Mobility, Inc. | 341 |
2 |
| Alstom Holdings | 510 |
1 |
| East Japan Railway Company | 62 |
1 |
| Grappone Technologies Inc. | 1 |
1 |
| SEW-EURODRIVE GmbH & Co. KG | 1919 |
1 |
| Westinghouse Air Brake Technologies Corporation | 512 |
1 |
| Zip Holdings LLC | 7 |
1 |
| Toshiba Infrastructure Systems & Solutions Corporation | 1022 |
1 |
| Toshiba Digital Solutions Corporation | 641 |
1 |
| SSI Schäfer Automation GmbH (DE) | 26 |
1 |
| Traffic Control Technology Co., Ltd | 31 |
1 |
| Ricci Eletrônica Ltda | 1 |
1 |
| Rumo S.A. | 1 |
1 |
| Ground Transportation Systems Canada Inc. | 58 |
1 |
| Other owners | 1 |