- All sections
- B - Performing operationstransporting
- B61L - Guiding railway trafficensuring the safety of railway traffic
- B61L 27/20 - Trackside control of safe travel of vehicle or train, e.g. braking curve calculation
Patent holdings for IPC class B61L 27/20
Total number of patents in this class: 170
10-year publication summary
|
2
|
0
|
2
|
6
|
13
|
15
|
27
|
41
|
47
|
26
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Siemens Mobility GmbH | 1703 |
20 |
| Casco Signal Ltd. | 57 |
16 |
| BNSF Railway Company | 413 |
9 |
| BYD Company Limited | 4821 |
9 |
| Mitsubishi Electric Corporation | 45860 |
8 |
| Metrom Rail, LLC | 51 |
8 |
| Casco Signal Co., Ltd. | 141 |
8 |
| Transportation IP Holdings, LLC | 928 |
6 |
| Mitsubishi Heavy Industries, Ltd. | 8657 |
4 |
| Progress Rail Services Corp | 234 |
4 |
| Siemens Mobility AG | 14 |
4 |
| Siemens Mobility, Inc. | 347 |
3 |
| Traffic Control Technology Co., Ltd | 31 |
3 |
| Cattron North America, Inc. | 139 |
3 |
| Crsc Research & Design Institute Group Co., Ltd. | 99 |
3 |
| GTS Deutschland GmbH | 21 |
3 |
| Beijing Jiaotong University | 152 |
2 |
| Korea Railroad Research Institute | 177 |
2 |
| National Railroad Passenger Corporation | 126 |
2 |
| Plasser & Theurer Export Von Bahnbaumaschinen Gesellschaft m.b.H. | 414 |
2 |
| Other owners | 51 |