- All sections
- B - Performing operationstransporting
- B61L - Guiding railway trafficensuring the safety of railway traffic
- B61L 27/60 - Testing or simulation
Patent holdings for IPC class B61L 27/60
Total number of patents in this class: 69
10-year publication summary
|
0
|
0
|
1
|
2
|
2
|
3
|
12
|
21
|
22
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| BNSF Railway Company | 370 |
11 |
| Hitachi, Ltd. | 15247 |
6 |
| Siemens Mobility GmbH | 1645 |
6 |
| Progress Rail Services Corp | 239 |
5 |
| NEC Corporation | 34540 |
3 |
| Technological Resources Pty. Limited | 445 |
3 |
| Union Pacific Railroad Company | 69 |
3 |
| Transportation IP Holdings, LLC | 908 |
2 |
| Casco Signal Co., Ltd. | 122 |
2 |
| Mitsubishi Electric Corporation | 44962 |
1 |
| Alstom Holdings | 511 |
1 |
| BYD Company Limited | 4374 |
1 |
| Carnegie Mellon University | 1474 |
1 |
| Casco Signal Ltd. | 43 |
1 |
| Deutsche Telekom AG | 1836 |
1 |
| Istanbul Teknik Universitesi | 154 |
1 |
| Korea Railroad Research Institute | 173 |
1 |
| New York Air Brake LLC | 262 |
1 |
| New York City Transit Authority | 2 |
1 |
| Nuctech Company Limited | 1351 |
1 |
| Other owners | 17 |