- 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: 36
Historique des publications depuis 10 ans
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2
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1
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6
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5
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2
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2
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2
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3
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3
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1
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Propriétaires principaux
| Proprétaire |
Total
|
Cette classe
|
|---|---|---|
| Jack Kennedy Metal Products & Buildings, Inc. | 34 |
7 |
| China University of Mining and Technology | 1247 |
3 |
| E. Dillon & Company | 31 |
2 |
| Floodbreak, L.L.C. | 33 |
2 |
| Micon | 13 |
2 |
| Implenia Schweiz AG | 13 |
2 |
| Henkel AG & Co. KGaA | 10535 |
1 |
| Aquatic Life Ltd., | 6 |
1 |
| China Shenhua Energy Company Limited | 24 |
1 |
| China University of Mining and Technology, Beijing | 92 |
1 |
| Corky's Management Services Pty Ltd | 2 |
1 |
| K+S Aktiengesellschaft | 93 |
1 |
| K+S KALI GmbH | 11 |
1 |
| Nanchang University | 36 |
1 |
| Luyu Royal Gold Building Materials (Heyuan) Co., Ltd. | 4 |
1 |
| Jiangsu Henghui Energy Technology Co., Ltd | 1 |
1 |
| Strata Linings Pty Ltd | 1 |
1 |
| China Railway First Group Co., Ltd. | 15 |
1 |
| Urban Rail Transit Engineering Co., Ltd. of China Railway First Group Co., Ltd. | 2 |
1 |
| Xi'an Century Metal Structure Co., Ltd. | 1 |
1 |
| Autres propriétaires | 4 |