- All sections
- B - Performing operations; transporting
- B61K - Auxiliary equipment specially adapted for railways, not otherwise provided for
- B61K 13/04 - Passenger-warning devices attached to vehicles; Safety devices for preventing accidents to passengers when entering or leaving vehicles
Patent holdings for IPC class B61K 13/04
Total number of patents in this class: 30
10-year publication summary
|
0
|
2
|
2
|
4
|
2
|
2
|
4
|
4
|
2
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi, Ltd. | 15226 |
6 |
| Hitachi Kokusai Electric Inc. | 1039 |
3 |
| Innova Patent GmbH | 249 |
3 |
| National Railroad Passenger Corporation | 127 |
2 |
| Industrial Technology Research Institute | 4959 |
1 |
| Mitsubishi Electric Corporation | 44851 |
1 |
| Nissan Motor Co., Ltd. | 12352 |
1 |
| JATCO Ltd | 1238 |
1 |
| Alstom Transport Technologies | 264 |
1 |
| Bombardier Transportation GmbH | 655 |
1 |
| Fisker Automotive, Inc. | 37 |
1 |
| Marimils Oy | 26 |
1 |
| Poma | 111 |
1 |
| Universal City Studios LLC | 2380 |
1 |
| Westinghouse Air Brake Technologies Corporation | 512 |
1 |
| Speedinnov | 20 |
1 |
| Intellectual Property Innovation Corporation | 30 |
1 |
| Siemens Mobility GmbH | 1644 |
1 |
| Traffic Control Technology Co., Ltd | 31 |
1 |
| Umeandus Technologies India Pvt. Ltd., | 7 |
1 |
| Other owners | 0 |