- All sections
- B - Performing operationstransporting
- B61L - Guiding railway trafficensuring the safety of railway traffic
- B61L 3/02 - Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control
Patent holdings for IPC class B61L 3/02
Total number of patents in this class: 35
10-year publication summary
6
|
3
|
7
|
2
|
10
|
2
|
1
|
3
|
1
|
0
|
2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Mitsubishi Electric Corporation | 45646 |
6 |
GE Global Sourcing LLC | 899 |
5 |
Siemens Mobility GmbH | 1697 |
3 |
Transportation IP Holdings, LLC | 924 |
3 |
Siemens AG | 24562 |
2 |
Hitachi, Ltd. | 15383 |
2 |
ABB Schweiz AG | 6865 |
2 |
3m Innovative Properties Company | 17856 |
1 |
Progress Rail Services Corp | 234 |
1 |
International Electronic Machines Corporation | 110 |
1 |
L.B. Foster Rail Technologies, Corp. | 15 |
1 |
Mitsubishi Electric Research Laboratories, Inc. | 1055 |
1 |
The Nippon Signal Co., Ltd. | 57 |
1 |
Union Pacific Railroad Company | 67 |
1 |
Westinghouse Air Brake Technologies Corporation | 504 |
1 |
SSI Schäfer Automation GmbH (DE) | 27 |
1 |
Casco Signal Co., Ltd. | 137 |
1 |
Hitachi Rail GTS Canada Inc. | 66 |
1 |
KB Signaling Inc. | 100 |
1 |
Other owners | 0 |