- Sections
- E - Constructions fixes
- E21F - Dispositifs de sécurité, transport, remblayage, sauvetage, ventilation ou drainage dans les mines ou tunnels
- E21F 17/16 - Modification des passages ou chambres des mines pour le stockage, spécialement de liquides ou de gaz
Détention brevets de la classe E21F 17/16
Brevets de cette classe: 62
Historique des publications depuis 10 ans
|
4
|
2
|
1
|
5
|
2
|
3
|
0
|
7
|
7
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Propriétaires principaux
| Proprétaire |
Total
|
Cette classe
|
|---|---|---|
| China Shenhua Energy Company Limited | 24 |
6 |
| Air Liquide Large Industries U.S. LP | 46 |
4 |
| Anhui University of Science and Technology | 178 |
4 |
| China University of Mining and Technology | 1228 |
4 |
| Cleantech GeoMechanics Inc. | 10 |
3 |
| China University of Mining & Technology (Beijing) | 42 |
2 |
| Deeproot Green Infrastructure, LLC | 35 |
2 |
| Taiyuan University of Technology | 234 |
2 |
| Tectona Ltd. | 2 |
2 |
| Ping 'an Coal Mine Gas Control National Engineering Research Center Co., Ltd. | 7 |
2 |
| Ping 'an Coal Mining Engineering Technology Research Institute Co., Ltd | 13 |
2 |
| Shell Internationale Research Maatschappij B.V. | 3720 |
1 |
| Shell Oil Company | 2148 |
1 |
| 1304338 Alberta Ltd. | 88 |
1 |
| 1304342 Alberta Ltd. | 86 |
1 |
| Athabasca Oil Corporation | 21 |
1 |
| Bilak, Roman | 5 |
1 |
| China University of Mining and Technology, Beijing | 80 |
1 |
| Dalian University of Technology | 1465 |
1 |
| Dusseault, Maurice B. | 4 |
1 |
| Autres propriétaires | 20 |