- 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: 118
10-year publication summary
|
5
|
21
|
12
|
7
|
14
|
13
|
6
|
11
|
7
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Siemens Mobility, Inc. | 374 |
45 |
| KB Signaling Inc. | 122 |
15 |
| Siemens Industry, Inc. | 1583 |
9 |
| C.D.L. Electric Company, Inc. | 32 |
8 |
| Siemens Mobility GmbH | 1844 |
5 |
| Siemens AG | 24177 |
4 |
| BNSF Railway Company | 518 |
4 |
| Railway Equipment Company, Inc. | 40 |
3 |
| General Electric Company | 13816 |
2 |
| Bayerische Motoren Werke Aktiengesellschaft | 15078 |
2 |
| Railway Equipment Company | 2 |
2 |
| Crsc Research & Design Institute Group Co., Ltd. | 158 |
2 |
| AJ Technologies LLC | 18 |
2 |
| Siemens Canada Limited | 88 |
1 |
| Robert Bosch GmbH | 43700 |
1 |
| Alstom Holdings | 625 |
1 |
| Charter Communications Operating, LLC | 1530 |
1 |
| NFA Innovations Pty Ltd | 3 |
1 |
| Siemens Rail Automation Holdings Limited | 10 |
1 |
| Volvo Car Corporation | 1908 |
1 |
| Other owners | 8 |