- Sections
- E - Constructions fixes
- E21C - Exploitation des mines ou carrières
- E21C 41/16 - Procédés d'exploitation minière souterraineTracés à cet effet
Détention brevets de la classe E21C 41/16
Brevets de cette classe: 223
Historique des publications depuis 10 ans
|
10
|
12
|
9
|
17
|
14
|
7
|
16
|
8
|
9
|
3
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Propriétaires principaux
| Proprétaire |
Total
|
Cette classe
|
|---|---|---|
| China University of Mining and Technology | 1287 |
23 |
| Komatsu Ltd. | 4658 |
15 |
| Joy Global Underground Mining LLC | 349 |
12 |
| Technological Resources Pty. Limited | 445 |
8 |
| The University of Tokyo | 4298 |
7 |
| RAG Aktiengesellschaft | 30 |
5 |
| Underground Extraction Technologies Pty Ltd | 17 |
5 |
| China University of Mining and Technology, Beijing | 102 |
4 |
| Epiroc Rock Drills Aktiebolag | 601 |
4 |
| Newcrest Mining Limited | 39 |
4 |
| Sinosteel Maanshan General Institute of Mining Research Co., Ltd | 39 |
4 |
| Anhui University of Science and Technology | 190 |
3 |
| Commonwealth Scientific and Industrial Research Organisation | 1669 |
3 |
| Gekko Systems Pty Ltd | 35 |
3 |
| Minrail Inc. | 5 |
3 |
| Russell Mineral Equipment Pty Ltd | 73 |
3 |
| Sandvik Mining and Construction Oy | 863 |
3 |
| Shenzhen University | 1688 |
3 |
| Huawei National Engineering Research Center of High Efficient Recycle and Utilization for Metallic Mineral Resources | 17 |
3 |
| Schlumberger Technology Corporation | 11349 |
2 |
| Autres propriétaires | 106 |