- 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: 216
10-year publication summary
|
22
|
9
|
8
|
14
|
7
|
12
|
12
|
18
|
15
|
11
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sumitomo Metal Mining Co., Ltd. | 1774 |
16 |
| Orbite Aluminae Inc. | 14 |
8 |
| AEM Technologies Inc. | 35 |
8 |
| Mitsubishi Materials Corporation | 2439 |
5 |
| Li-Cycle Corp. | 41 |
5 |
| Metals Technology Development Company LLC | 8 |
4 |
| Outotec Oyj | 279 |
4 |
| Umicore | 640 |
4 |
| AEM Canada Group Inc. | 13 |
4 |
| Green Li-ion Pte. Ltd. | 29 |
4 |
| ENGITEC TECHNOLOGIES S.p.A. | 26 |
3 |
| Guangdong Brunp Recycling Technology Co., Ltd | 1227 |
3 |
| Heraeus Deutschland GmbH & Co. KG | 419 |
3 |
| Hunan Brunp Recycling Technology Co., Ltd. | 1196 |
3 |
| JX Nippon Mining & Metals Corporation | 1490 |
3 |
| Kobelco Eco-solutions Co., Ltd. | 127 |
3 |
| Search Minerals, Inc. | 4 |
3 |
| Solvay SA | 996 |
3 |
| Tracegrow Oy | 15 |
3 |
| Sharp Kabushiki Kaisha | 18775 |
3 |
| Other owners | 124 |