- All sections
- C - Chemistrymetallurgy
- C22B - Production or refining of metalspretreatment of raw materials
- C22B 30/04 - Obtaining arsenic
Patent holdings for IPC class C22B 30/04
Total number of patents in this class: 105
10-year publication summary
|
3
|
8
|
11
|
4
|
6
|
1
|
2
|
8
|
9
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Dowa Metals & Mining Co., Ltd. | 41 |
12 |
| Kunming University of Science and Technology | 179 |
7 |
| JX Nippon Mining & Metals Corporation | 1489 |
5 |
| Central South University | 435 |
4 |
| Goldcorp Inc. | 15 |
4 |
| Outotec (Finland) Oy | 480 |
4 |
| Aurubis AG | 67 |
3 |
| Ecometales Limited | 17 |
3 |
| LEIYANG YANXIN NON-FERROUS METALS Co., LTD. | 7 |
3 |
| Molibdenos y Metales S.A. | 13 |
3 |
| Sherritt International Corporation | 29 |
3 |
| Shibaura Institute of Technology | 97 |
3 |
| Sumitomo Metal Mining Co., Ltd. | 1777 |
3 |
| Eldorado Gold Corporation | 11 |
3 |
| Goldcorp Inc. | 6 |
3 |
| Freeport Minerals Corporation | 107 |
2 |
| Mitsubishi Materials Corporation | 2438 |
2 |
| Outotec Oyj | 278 |
2 |
| Yanxin Environmental Protection and Technology Co., Ltd. | 5 |
2 |
| Compañia Minera Pargo Minerals SpA | 4 |
2 |
| Other owners | 32 |