- 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: 23
10-year publication summary
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4
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0
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0
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1
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0
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1
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2
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3
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2
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2
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Korea Zinc Co., Ltd. | 88 |
4 |
| World Resources Company | 13 |
2 |
| EnhancedGEO Holdings, LLC | 74 |
2 |
| Metso Metals Oy | 207 |
2 |
| Doosan Lentjes GmbH | 47 |
1 |
| DRT Deutsche Rohstofftechnik GmbH | 3 |
1 |
| Eurecat S.A. | 90 |
1 |
| Glencore Queensland Limited | 9 |
1 |
| Kinotech Solar Energy Corporation | 13 |
1 |
| Sichuan Xinhong Technology Co., Ltd | 3 |
1 |
| The University of Queensland | 661 |
1 |
| Vito NV | 300 |
1 |
| Yanggu Xiangguang Copper Co., Ltd. | 9 |
1 |
| Yava Technologies Inc. | 9 |
1 |
| Woollett, Andrew | 1 |
1 |
| Metso Outotec Finland Oy | 348 |
1 |
| Anglo American Technical & Sustainability Services Ltd | 61 |
1 |
| Other owners | 0 |