- All sections
- B - Performing operationstransporting
- B61L - Guiding railway trafficensuring the safety of railway traffic
- B61L 27/14 - Following schedules
Patent holdings for IPC class B61L 27/14
Total number of patents in this class: 50
10-year publication summary
|
2
|
1
|
1
|
3
|
3
|
6
|
12
|
2
|
6
|
14
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| BNSF Railway Company | 553 |
12 |
| Transportation IP Holdings, LLC | 1003 |
9 |
| Hitachi, Ltd. | 16183 |
3 |
| Mitsubishi Electric Corporation | 48236 |
3 |
| Casco Signal Ltd. | 84 |
3 |
| Siemens Mobility AG | 19 |
3 |
| Toshiba Corporation | 12625 |
2 |
| Amazon Technologies, Inc. | 28216 |
2 |
| BYD Company Limited | 6549 |
2 |
| Korea Railroad Research Institute | 184 |
2 |
| Siemens Mobility GmbH | 1891 |
2 |
| Tata Consultancy Services Limited | 2579 |
1 |
| Progress Rail Locomotive Inc. | 337 |
1 |
| Siemens Mobility, Inc. | 375 |
1 |
| Traffic Control Technology Co., Ltd | 31 |
1 |
| Siemens Mobility SAS | 64 |
1 |
| Casco Signal Co., Ltd. | 202 |
1 |
| ALSTOM Holdings | 9 |
1 |
| Other owners | 0 |