- Sections
- E - Constructions fixes
- E21C - Exploitation des mines ou carrières
- E21C 41/32 - Réaménagement de surfaces d'exploitation minière
Détention brevets de la classe E21C 41/32
Brevets de cette classe: 25
Historique des publications depuis 10 ans
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2
|
2
|
2
|
3
|
1
|
2
|
1
|
2
|
0
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Propriétaires principaux
| Proprétaire |
Total
|
Cette classe
|
|---|---|---|
| Massachusetts Institute of Technology | 10128 |
2 |
| China University of Mining and Technology | 1269 |
2 |
| Weir Canada, Inc. | 21 |
2 |
| HPS Enterprises II, LLC | 2 |
2 |
| A.B.G. Limited | 8 |
1 |
| China University of Mining and Technology, Beijing | 95 |
1 |
| Industry-Academic Cooperation Foundation Gyeongsang National University | 592 |
1 |
| Jri Ingenieria S.A. | 2 |
1 |
| Laurentian University of Sudbury | 13 |
1 |
| Norsk Hydro ASA | 261 |
1 |
| Petroleo Brasileiro S.A. - Petrobras | 871 |
1 |
| Rheinkalk GmbH | 28 |
1 |
| Shandong University of Science and Technology | 530 |
1 |
| TAKRAF GmbH | 65 |
1 |
| Terra Nova Technologies, Inc. | 1 |
1 |
| ThyssenKrupp Fördertechnik GmbH | 14 |
1 |
| Opti-minez Pty Ltd | 7 |
1 |
| Cosentino Research & Development, S.L. | 37 |
1 |
| Sanmenxia Bomao Industrial Co., Ltd. | 2 |
1 |
| China Energy Group Xinjiang Energy Company Ltd | 1 |
1 |
| Autres propriétaires | 1 |