- All sections
- B - Performing operationstransporting
- B61L - Guiding railway trafficensuring the safety of railway traffic
- B61L 27/12 - Preparing schedules
Patent holdings for IPC class B61L 27/12
Total number of patents in this class: 65
10-year publication summary
|
0
|
3
|
1
|
0
|
2
|
3
|
7
|
14
|
16
|
13
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi, Ltd. | 15499 |
18 |
| NEC Corporation | 35734 |
3 |
| Mitsubishi Electric Corporation | 46160 |
3 |
| BNSF Railway Company | 426 |
3 |
| Parallel Systems, Inc. | 36 |
3 |
| Tata Consultancy Services Limited | 2344 |
3 |
| Technological Resources Pty. Limited | 453 |
3 |
| Transportation IP Holdings, LLC | 933 |
3 |
| Toshiba Corporation | 12350 |
2 |
| BYD Company Limited | 5029 |
2 |
| Progress Rail Locomotive Inc. | 320 |
2 |
| Siemens Mobility, Inc. | 354 |
2 |
| Casco Signal Co., Ltd. | 146 |
2 |
| Progress Rail Services Corp | 235 |
1 |
| National Institute of Advanced Industrial Science and Technology | 3791 |
1 |
| Casco Signal Ltd. | 58 |
1 |
| Herzog Railroad Services, Inc. | 63 |
1 |
| Toshiba Infrastructure Systems & Solutions Corporation | 1047 |
1 |
| Siemens Mobility GmbH | 1723 |
1 |
| HaCon Ingenieurgesellschaft mbH | 21 |
1 |
| Other owners | 9 |