- Sections
- E - Constructions fixes
- E21F - Dispositifs de sécurité, transport, remblayage, sauvetage, ventilation ou drainage dans les mines ou tunnels
- E21F 17/103 - Barrages, p. ex. pour ventilation
Détention brevets de la classe E21F 17/103
Brevets de cette classe: 41
Historique des publications depuis 10 ans
|
1
|
6
|
5
|
2
|
2
|
2
|
2
|
3
|
3
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Propriétaires principaux
| Proprétaire |
Total
|
Cette classe
|
|---|---|---|
| Jack Kennedy Metal Products & Buildings, Inc. | 32 |
7 |
| China University of Mining and Technology | 1290 |
3 |
| Aquatic Life Ltd., | 5 |
2 |
| E. Dillon & Company | 29 |
2 |
| Floodbreak, L.L.C. | 33 |
2 |
| Micon | 12 |
2 |
| Implenia Schweiz AG | 13 |
2 |
| Henkel AG & Co. KGaA | 10720 |
1 |
| China Shenhua Energy Company Limited | 24 |
1 |
| China University of Mining and Technology, Beijing | 102 |
1 |
| Corky's Management Services Pty Ltd | 2 |
1 |
| K+S Aktiengesellschaft | 91 |
1 |
| K+S KALI GmbH | 11 |
1 |
| Nanchang University | 36 |
1 |
| Shandong University of Science and Technology | 538 |
1 |
| Taiyuan University of Technology | 295 |
1 |
| Luyu Royal Gold Building Materials (Heyuan) Co., Ltd. | 4 |
1 |
| Guangzhou Metro Design&research Institute Co., Ltd. | 20 |
1 |
| Jiangsu Henghui Energy Technology Co., Ltd | 1 |
1 |
| Strata Linings Pty Ltd | 1 |
1 |
| Autres propriétaires | 8 |