- All sections
- B - Performing operationstransporting
- B61L - Guiding railway trafficensuring the safety of railway traffic
- B61L 29/22 - Operation by approaching rail vehicle or train electrically
Patent holdings for IPC class B61L 29/22
Total number of patents in this class: 119
10-year publication summary
|
5
|
21
|
12
|
7
|
14
|
13
|
6
|
11
|
8
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Siemens Mobility, Inc. | 375 |
45 |
| KB Signaling Inc. | 128 |
15 |
| Siemens Industry, Inc. | 1588 |
9 |
| C.D.L. Electric Company, Inc. | 32 |
8 |
| Siemens Mobility GmbH | 1892 |
5 |
| Siemens AG | 23972 |
4 |
| BNSF Railway Company | 554 |
4 |
| Railway Equipment Company, Inc. | 41 |
3 |
| General Electric Company | 13966 |
2 |
| Bayerische Motoren Werke Aktiengesellschaft | 15425 |
2 |
| Railway Equipment Company | 2 |
2 |
| Crsc Research & Design Institute Group Co., Ltd. | 172 |
2 |
| AJ Technologies LLC | 20 |
2 |
| Siemens Canada Limited | 87 |
1 |
| Robert Bosch GmbH | 44291 |
1 |
| Alstom Holdings | 630 |
1 |
| Charter Communications Operating, LLC | 1623 |
1 |
| NFA Innovations Pty Ltd | 2 |
1 |
| Siemens Rail Automation Holdings Limited | 10 |
1 |
| Volvo Car Corporation | 1964 |
1 |
| Other owners | 9 |