- All sections
- C - Chemistrymetallurgy
- C22B - Production or refining of metalspretreatment of raw materials
- C22B 3/46 - Treatment or purification of solutions, e.g. obtained by leaching by chemical processes by substitution, e.g. by cementation
Patent holdings for IPC class C22B 3/46
Total number of patents in this class: 220
10-year publication summary
|
7
|
5
|
9
|
4
|
9
|
8
|
15
|
14
|
14
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sumitomo Metal Mining Co., Ltd. | 1894 |
16 |
| Orbite Aluminae Inc. | 14 |
8 |
| AEM Technologies Inc. | 36 |
8 |
| Metso Finland Oy | 657 |
6 |
| Mitsubishi Materials Corporation | 2470 |
5 |
| Metals Technology Development Company LLC | 8 |
4 |
| Outotec Oyj | 253 |
4 |
| Umicore | 696 |
4 |
| AEM Canada Group Inc. | 13 |
4 |
| Green Li-ion Pte. Ltd. | 29 |
4 |
| 1001297676 Ontario Inc. | 27 |
4 |
| ENGITEC TECHNOLOGIES S.p.A. | 27 |
3 |
| Guangdong Brunp Recycling Technology Co., Ltd | 1248 |
3 |
| Hatch Ltd. | 215 |
3 |
| Heraeus Deutschland GmbH & Co. KG | 406 |
3 |
| Hunan Brunp Recycling Technology Co., Ltd. | 1217 |
3 |
| JX Nippon Mining & Metals Corporation | 1474 |
3 |
| Search Minerals, Inc. | 4 |
3 |
| Solvay SA | 970 |
3 |
| Tracegrow Oy | 16 |
3 |
| Other owners | 126 |