Patent holdings for IPC class E01B 11/42

Total number of patents in this class: 21

10-year publication summary

3
1
1
0
2
2
0
0
0
0
2015 2016 2017 2018 2019 2020 2021 2022 2023 2024

Principal owners for this class

Owner
All patents
This class
IHI Corporation
3268
3
Voestalpine BWG GmbH & Co. KG
14
3
PPG Industries Ohio, Inc.
3430
2
VAE GmbH
29
2
Voestalpine VAE GmbH
34
2
Siemens S.A.S.
48
1
Cleveland Track Material, Inc.
20
1
Non Intrusive Crossover System Limited
3
1
voestalpine BWG GmbH
6
1
UNIVERGOM s.r.l.
2
1
Siemens Mobility SAS
62
1
Vossloh Laeis GmbH
2
1
voestalpine Railway Systems GmbH
26
1
voestalpine Turnout Technology Germany GmbH
12
1
Other owners 0