- Sections
- E - Constructions fixes
- E21F - Dispositifs de sécurité, transport, remblayage, sauvetage, ventilation ou drainage dans les mines ou tunnels
- E21F 16/02 - Drainage de tunnels
Détention brevets de la classe E21F 16/02
Brevets de cette classe: 60
Historique des publications depuis 10 ans
|
1
|
3
|
2
|
1
|
5
|
5
|
2
|
6
|
6
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Propriétaires principaux
| Proprétaire |
Total
|
Cette classe
|
|---|---|---|
| CCCC Second Highway Consultants Co., Ltd. | 19 |
4 |
| China University of Mining and Technology | 1308 |
2 |
| Dalian University of Technology | 1594 |
2 |
| Floodbreak, L.L.C. | 35 |
2 |
| Luossavaara-Kiirunavaara AB | 132 |
2 |
| Shenzhen Municipal Design & Research Institute Co., Ltd. | 24 |
2 |
| Dolenco Group ApS | 4 |
2 |
| Fujian Railway Construction Co., Ltd of China Railway 24th Bureau Group | 2 |
2 |
| "agru" Kunststofftechnik Gesellschaft m.b.H. | 38 |
1 |
| China Institute of Water Resources and Hydropower Research | 103 |
1 |
| Jilin University | 297 |
1 |
| Research Institute of Highway Ministry of Transport | 27 |
1 |
| Shandong University of Science and Technology | 545 |
1 |
| Stabinor AS | 1 |
1 |
| WSP Global Inc. | 32 |
1 |
| Autostrade per l'Italia Spa | 56 |
1 |
| Interbran Systems AG | 9 |
1 |
| Chang'an University | 192 |
1 |
| Norrapro Oy | 7 |
1 |
| Jinan Municipal Engineering Construction Group Co., Ltd. | 2 |
1 |
| Autres propriétaires | 30 |