- Sections
- E - Constructions fixes
- E21F - Dispositifs de sécurité, transport, remblayage, sauvetage, ventilation ou drainage dans les mines ou tunnels
- E21F 5/04 - Barrages d'eau pulvérisée
Détention brevets de la classe E21F 5/04
Brevets de cette classe: 34
Historique des publications depuis 10 ans
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0
|
3
|
1
|
1
|
2
|
9
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6
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2
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1
|
0
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Propriétaires principaux
| Proprétaire |
Total
|
Cette classe
|
|---|---|---|
| Anhui University of Science and Technology | 189 |
4 |
| PingAn Coal Mining Engineering Research Institute Co. , Ltd | 4 |
4 |
| Shandong University of Science and Technology | 524 |
2 |
| Sany Heavy Equipment Co., Ltd. | 77 |
2 |
| The Procter & Gamble Company | 22035 |
1 |
| Brokk Aktiebolag | 32 |
1 |
| Ecolab USA Inc. | 5499 |
1 |
| Frank T. Porta | 1 |
1 |
| Husqvarna AB | 2911 |
1 |
| Maxum, LLC | 7 |
1 |
| Twin City Fan Companies, Ltd. | 41 |
1 |
| Wind Merchants IP, LLC. | 1 |
1 |
| Xiangtan University | 61 |
1 |
| Jiangsu University of Science and Technology | 383 |
1 |
| Qingdao University of Technology | 614 |
1 |
| Beijing Tiandi-marco Electro-hydraulic Control System Co., Ltd | 7 |
1 |
| Experticia Ingenieros S.A. | 1 |
1 |
| Nanjing Haners Biotechnology Co., Ltd. | 32 |
1 |
| Beijing Ccri-tianma Automation Technology Co., Ltd. | 66 |
1 |
| Obshchestvo S Ogranichennoj Otvetstvennost'yu "partner" | 1 |
1 |
| Autres propriétaires | 6 |