- All sections
- C - Chemistrymetallurgy
- C22B - Production or refining of metalspretreatment of raw materials
- C22B 19/02 - Preliminary treatment of oresPreliminary refining of zinc oxide
Patent holdings for IPC class C22B 19/02
Total number of patents in this class: 24
10-year publication summary
|
0
|
0
|
1
|
0
|
1
|
4
|
4
|
3
|
2
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Korea Zinc Co., Ltd. | 161 |
4 |
| World Resources Company | 13 |
2 |
| EnhancedGEO Holdings, LLC | 77 |
2 |
| Metso Metals Oy | 221 |
2 |
| Doosan Lentjes GmbH | 49 |
1 |
| DRT Deutsche Rohstofftechnik GmbH | 3 |
1 |
| Eurecat S.A. | 92 |
1 |
| Glencore Queensland Limited | 9 |
1 |
| Kinotech Solar Energy Corporation | 13 |
1 |
| Sichuan Xinhong Technology Co., Ltd | 3 |
1 |
| The University of Queensland | 662 |
1 |
| Vito NV | 330 |
1 |
| Yanggu Xiangguang Copper Co., Ltd. | 9 |
1 |
| Yava Technologies Inc. | 9 |
1 |
| Woollett, Andrew | 1 |
1 |
| Metso Outotec Finland Oy | 173 |
1 |
| Anglo American Technical & Sustainability Services Ltd | 69 |
1 |
| Capstone Copper Corp. | 8 |
1 |
| Other owners | 0 |