- Sections
- E - Constructions fixes
- E21F - Dispositifs de sécurité, transport, remblayage, sauvetage, ventilation ou drainage dans les mines ou tunnels
- E21F 17/18 - Adaptations particulières des dispositifs de signalisation ou d'alarme
Détention brevets de la classe E21F 17/18
Brevets de cette classe: 287
Historique des publications depuis 10 ans
18
|
16
|
16
|
15
|
14
|
41
|
35
|
23
|
33
|
13
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Propriétaires principaux
Proprétaire |
Total
|
Cette classe
|
---|---|---|
China University of Mining and Technology | 1189 |
37 |
Shandong University of Science and Technology | 459 |
15 |
Joy Global Underground Mining LLC | 331 |
14 |
Sandvik Mining and Construction Oy | 703 |
10 |
Caterpillar Inc. | 8877 |
5 |
Caterpillar Global Mining Europe GmbH | 86 |
4 |
Anhui University of Science and Technology | 156 |
4 |
University of Science and Technology Beijing | 245 |
4 |
China Railway Tunnel Group Co., Ltd | 24 |
4 |
Komatsu Ltd. | 4265 |
3 |
NCM Innovations (Pty) Ltd | 35 |
3 |
Shandong University | 886 |
3 |
Strata Products Worldwide, LLC | 61 |
3 |
Institute of Rock and Soil Mechanics, Chinese Academy of Sciences | 46 |
3 |
Fnv IP B.V. | 167 |
3 |
Zhong-an Academy of safety Engineering | 5 |
3 |
State Key Laboratory of Shield Machine and Boring Technology | 16 |
3 |
Xuzhou Kerui Mining Technology Co., Ltd. | 9 |
3 |
Shanxi Tiandi Coal Mining Machinery Co., Ltd. | 14 |
3 |
Central South University | 364 |
2 |
Autres propriétaires | 158 |