- All sections
- E - Fixed constructions
- E21F - Safety devices, transport, filling-up, rescue, ventilation, or drainage in or of mines or tunnels
- E21F 5/06 - Fluids used for spraying
Patent holdings for IPC class E21F 5/06
Total number of patents in this class: 25
10-year publication summary
|
5
|
3
|
3
|
4
|
1
|
0
|
1
|
2
|
4
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| China University of Mining and Technology | 1292 |
4 |
| The Arizona Board of Regents on Behalf of the University of Arizona | 2257 |
3 |
| Ecolab USA Inc. | 5725 |
3 |
| Shandong University of Science and Technology | 538 |
3 |
| American Refining Group, Inc. | 28 |
1 |
| Cargill, Incorporated | 2943 |
1 |
| ChemTreat, Inc. | 264 |
1 |
| Frank T. Porta | 1 |
1 |
| Henry Company, LLC | 240 |
1 |
| Oy Granula AB Ltd | 25 |
1 |
| TECHNOALPIN HOLDING S.p.A. | 75 |
1 |
| Trican Well Service Ltd. | 76 |
1 |
| Experticia Ingenieros S.A. | 1 |
1 |
| Auxilium Technology Group LLC | 8 |
1 |
| Locus Solutions IPCo, LLC | 334 |
1 |
| BGRIMM Technology Group | 14 |
1 |
| Other owners | 0 |