- All sections
- E - Fixed constructions
- E21F - Safety devices, transport, filling-up, rescue, ventilation, or drainage in or of mines or tunnels
- E21F 5/00 - Means or methods for preventing, binding, depositing or removing dustPreventing explosions or fires
Patent holdings for IPC class E21F 5/00
Total number of patents in this class: 66
10-year publication summary
|
8
|
5
|
3
|
7
|
5
|
8
|
6
|
6
|
2
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| China University of Mining and Technology | 1245 |
12 |
| Shandong University of Science and Technology | 506 |
8 |
| Komatsu Ltd. | 4512 |
2 |
| American Refining Group, Inc. | 28 |
2 |
| Cargill, Incorporated | 2887 |
2 |
| Ecolab USA Inc. | 5456 |
2 |
| Sandvik Intellectual Property AB | 1492 |
2 |
| Rival Downhole Tools LC | 39 |
2 |
| Swisscolor s.r.o. | 2 |
2 |
| General Electric Company | 13830 |
1 |
| Tsinghua University | 5842 |
1 |
| The Arizona Board of Regents on Behalf of the University of Arizona | 2145 |
1 |
| Central South University | 430 |
1 |
| CFT GmbH Compact Filter Technic | 11 |
1 |
| Dust Control Technology, Inc. | 14 |
1 |
| Dust Solutions, Inc. | 3 |
1 |
| Frank T. Porta | 1 |
1 |
| GelTech Solutions, Inc. | 11 |
1 |
| Micon | 13 |
1 |
| Sturvek International NV | 1 |
1 |
| Other owners | 21 |