- All sections
- E - Fixed constructions
- E01C - Construction of, or surfaces for, roads, sports grounds, or the likemachines or auxiliary tools for construction or repair
- E01C 1/04 - Road crossings on different levelsInterconnections between roads on different levels
Patent holdings for IPC class E01C 1/04
Total number of patents in this class: 29
10-year publication summary
|
10
|
4
|
9
|
13
|
8
|
8
|
5
|
4
|
4
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Grade Separation Systems Inc. | 5 |
3 |
| Beijing Jiaotong University | 166 |
2 |
| Blue Energy Canada Inc. | 7 |
2 |
| Idroesse Infrastrutture SpA | 2 |
2 |
| Antsygin, Alexandr Vitalievich | 1 |
1 |
| CeramTec GmbH | 328 |
1 |
| Council of Scientific & Industrial Research | 1431 |
1 |
| Qingwei, Chen | 1 |
1 |
| Transoft Solutions Inc. | 81 |
1 |
| Exeq SA | 1 |
1 |
| Tanajo LLC | 1 |
1 |
| Nine R. Vaghi Foundation | 1 |
1 |
| The Nino R. Vaghi Foundation, Inc. | 3 |
1 |
| du Kuai Tong (Beijing) Traffic Dispersion Equipment Co., Ltd. | 5 |
1 |
| Dubai Aviation Engineering Projects | 7 |
1 |
| Geodesic Techniques (P) Ltd | 1 |
1 |
| GÖTSCHL, Franz | 2 |
1 |
| NIZОVTSЕV, Yurу МiKhаiIоviсh | 1 |
1 |
| PT Architecture Design (Shenzhen) Co. Ltd | 2 |
1 |
| Xincon Computer Technology (Suzhou) Co., Ltd | 1 |
1 |
| Other owners | 4 |