- All sections
- E - Fixed constructions
- E01B - Permanent waypermanent-way toolsmachines for making railways of all kinds
- E01B 3/32 - Transverse or longitudinal sleepersOther means resting directly on the ballastway for supporting rails made from concrete or from natural or artificial stone with armouring or reinforcement
Patent holdings for IPC class E01B 3/32
Total number of patents in this class: 15
10-year publication summary
|
5
|
3
|
1
|
1
|
1
|
1
|
0
|
2
|
2
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| The Regents of the University of Michigan | 4733 |
2 |
| China Railway Siyuan Survey and Design Group Co., Ltd. | 69 |
2 |
| Alstom Holdings | 612 |
1 |
| Geotek, LLC | 13 |
1 |
| MSB-Management GmbH | 5 |
1 |
| Greenrail Group S.r.l. | 3 |
1 |
| China Academy of Railway Sciences Corporation Limited | 27 |
1 |
| Beijing Tieke Shougang Track Technology Co. , Ltd | 2 |
1 |
| China Academy of Railway Sciences Railway Engineering Research Institute | 11 |
1 |
| T.C. Erciyes Universitesi | 66 |
1 |
| Vossloh Fastening Systems GmbH | 18 |
1 |
| Arxada AG | 165 |
1 |
| Inventio GmbH | 1 |
1 |
| Other owners | 0 |