- All sections
- B - Performing operationstransporting
- B61L - Guiding railway trafficensuring the safety of railway traffic
- B61L 3/22 - Continuous control along the route using magnetic or electrostatic inductionContinuous control along the route using electromagnetic radiation
Patent holdings for IPC class B61L 3/22
Total number of patents in this class: 59
10-year publication summary
|
5
|
3
|
10
|
2
|
2
|
3
|
4
|
2
|
3
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| BNSF Railway Company | 411 |
9 |
| SEW-EURODRIVE GmbH & Co. KG | 1931 |
8 |
| Universal City Studios LLC | 2498 |
3 |
| Siemens AG | 24568 |
2 |
| Mitsubishi Electric Corporation | 45752 |
2 |
| Alstom Holdings | 605 |
2 |
| Ansaldo STS USA, Inc. | 39 |
2 |
| Conductix-Wampfler GmbH | 82 |
2 |
| Meteorcomm LLC | 52 |
2 |
| Mitsubishi Electric Research Laboratories, Inc. | 1056 |
2 |
| Siemens Mobility GmbH | 1701 |
2 |
| KB Signaling Inc. | 100 |
2 |
| General Electric Company | 13823 |
1 |
| Rockwell Collins, Inc. | 2483 |
1 |
| Advanced Transport Systems Limited | 6 |
1 |
| Aktiebolaget SKF | 2921 |
1 |
| Australian Rail Track Corporation Ltd | 22 |
1 |
| Bombardier Primove GmbH | 63 |
1 |
| Bombardier Transportation GmbH | 648 |
1 |
| Lsis Co., Ltd. | 816 |
1 |
| Other owners | 13 |