- All sections
- B - Performing operationstransporting
- B61L - Guiding railway trafficensuring the safety of railway traffic
- B61L 29/32 - Timing, e.g. advance warning of approaching train
Patent holdings for IPC class B61L 29/32
Total number of patents in this class: 72
10-year publication summary
|
3
|
17
|
12
|
4
|
7
|
2
|
4
|
2
|
3
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Siemens Mobility, Inc. | 375 |
20 |
| Siemens Mobility GmbH | 1896 |
9 |
| KB Signaling Inc. | 128 |
6 |
| Siemens Industry, Inc. | 1594 |
5 |
| BNSF Railway Company | 559 |
2 |
| Westinghouse Air Brake Technologies Corporation | 486 |
2 |
| Trainfo Corp. | 3 |
2 |
| Siemens Mobility Limited | 36 |
2 |
| Siemens Mobility, Inc. | 2 |
2 |
| General Electric Company | 13999 |
1 |
| Siemens AG | 23913 |
1 |
| Siemens Canada Limited | 87 |
1 |
| Hitachi, Ltd. | 16221 |
1 |
| Daimler AG | 2797 |
1 |
| Cohda Wireless Pty. Ltd. | 26 |
1 |
| The Island Radar Company | 1 |
1 |
| Metrom Rail, LLC | 55 |
1 |
| NFA Innovations Pty Ltd | 2 |
1 |
| QR Limited | 4 |
1 |
| Railway Equipment Company, Inc. | 42 |
1 |
| Other owners | 11 |