- All sections
- B - Performing operations; transporting
- B61L - Guiding railway traffic; ensuring the safety of railway traffic
- B61L 27/20 - Trackside control of safe travel of vehicle or vehicle train, e.g. braking curve calculation
Patent holdings for IPC class B61L 27/20
Total number of patents in this class: 105
10-year publication summary
1
|
2
|
0
|
2
|
5
|
11
|
10
|
24
|
38
|
17
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Siemens Mobility GmbH | 1550 |
12 |
Casco Signal Ltd. | 34 |
9 |
Mitsubishi Electric Corporation | 43934 |
7 |
BNSF Railway Company | 328 |
6 |
BYD Company Limited | 3700 |
6 |
Metrom Rail, LLC | 47 |
5 |
Transportation IP Holdings, LLC | 843 |
5 |
Mitsubishi Heavy Industries, Ltd. | 8217 |
3 |
Progress Rail Services Corp | 225 |
3 |
Traffic Control Technology Co., Ltd | 31 |
3 |
National Railroad Passenger Corporation | 122 |
2 |
Plasser & Theurer Export Von Bahnbaumaschinen Gesellschaft m.b.H. | 385 |
2 |
Technological Resources Pty. Limited | 444 |
2 |
Westinghouse Air Brake Technologies Corporation | 521 |
2 |
Siemens Mobility, Inc. | 329 |
2 |
Siemens Mobility AG | 11 |
2 |
Cattron North America, Inc. | 137 |
2 |
Casco Signal Co., Ltd. | 94 |
2 |
Hitachi Rail STS S.p.A. | 24 |
2 |
GTS Deutschland GmbH | 14 |
2 |
Other owners | 26 |