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