- 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
|
13
|
13
|
9
|
23
|
16
|
10
|
19
|
10
|
11
|
5
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Propriétaires principaux
| Proprétaire |
Total
|
Cette classe
|
|---|---|---|
| China University of Mining and Technology | 1312 |
23 |
| Komatsu Ltd. | 4741 |
15 |
| Joy Global Underground Mining LLC | 344 |
12 |
| Technological Resources Pty. Limited | 442 |
8 |
| The University of Tokyo | 4372 |
7 |
| RAG Aktiengesellschaft | 29 |
5 |
| Underground Extraction Technologies Pty Ltd | 17 |
5 |
| China University of Mining and Technology, Beijing | 105 |
4 |
| Epiroc Rock Drills Aktiebolag | 662 |
4 |
| Newcrest Mining Limited | 37 |
4 |
| Sinosteel Maanshan General Institute of Mining Research Co., Ltd | 41 |
4 |
| Anhui University of Science and Technology | 199 |
3 |
| Commonwealth Scientific and Industrial Research Organisation | 1653 |
3 |
| Gekko Systems Pty Ltd | 34 |
3 |
| Russell Mineral Equipment Pty Ltd | 75 |
3 |
| Sandvik Mining and Construction Oy | 889 |
3 |
| Shenzhen University | 1727 |
3 |
| Huawei National Engineering Research Center of High Efficient Recycle and Utilization for Metallic Mineral Resources | 17 |
3 |
| Schlumberger Technology Corporation | 11839 |
2 |
| Schlumberger Canada Limited | 7609 |
2 |
| Autres propriétaires | 107 |