- All sections
- C - Chemistry; metallurgy
- C22B - Production or refining of metals; pretreatment 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: 191
10-year publication summary
|
18
|
22
|
9
|
8
|
14
|
6
|
12
|
12
|
17
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sumitomo Metal Mining Co., Ltd. | 1670 |
14 |
| Orbite Aluminae Inc. | 14 |
8 |
| AEM Technologies Inc. | 33 |
8 |
| Mitsubishi Materials Corporation | 2378 |
6 |
| Li-Cycle Corp. | 36 |
5 |
| Kobelco Eco-solutions Co., Ltd. | 124 |
4 |
| Metals Technology Development Company LLC | 8 |
4 |
| Outotec Oyj | 318 |
4 |
| Metso Outotec Finland Oy | 795 |
4 |
| AEM Canada Group Inc. | 13 |
4 |
| ENGITEC TECHNOLOGIES S.p.A. | 24 |
3 |
| Institut National de La Recherche Scientifique (inrs) | 41 |
3 |
| JX Nippon Mining & Metals Corporation | 1576 |
3 |
| Search Minerals, Inc. | 4 |
3 |
| Solvay SA | 1181 |
3 |
| Tracegrow Oy | 16 |
3 |
| Sharp Kabushiki Kaisha | 18957 |
3 |
| Green Li-ion Pte. Ltd. | 20 |
3 |
| Clean Mining Pty Ltd | 3 |
3 |
| Chevron U.S.A. Inc. | 3774 |
2 |
| Other owners | 101 |