- All sections
- C - Chemistrymetallurgy
- C22B - Production or refining of metalspretreatment of raw materials
- C22B 3/38 - Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds containing phosphorus
Patent holdings for IPC class C22B 3/38
Total number of patents in this class: 342
10-year publication summary
|
17
|
15
|
17
|
7
|
13
|
11
|
40
|
35
|
50
|
35
|
| 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. | 1974 |
18 |
| Guangdong Brunp Recycling Technology Co., Ltd | 1265 |
16 |
| Hunan Brunp Recycling Technology Co., Ltd. | 1226 |
16 |
| FUJIFILM Corporation | 30514 |
10 |
| Hunan Brunp EV Recycling Co., Ltd. | 378 |
10 |
| BASF SE | 21303 |
9 |
| Asaka Riken Co., Ltd. | 54 |
8 |
| JX Nippon Mining & Metals Corporation | 1461 |
8 |
| Korea Zinc Co., Ltd. | 171 |
7 |
| Kemco | 54 |
7 |
| JX Metals Circular Solutions Co., Ltd. | 80 |
7 |
| Commissariat à l'énergie atomique et aux energies alternatives | 11123 |
6 |
| Centre National de La Recherche Scientifique | 11023 |
5 |
| Changchun Institute of Applied Chemistry Chinese Academy of Sciences | 114 |
5 |
| Yara International ASA | 900 |
5 |
| Seren Technologies Limited | 9 |
5 |
| Igo Limited | 9 |
5 |
| Carester | 7 |
5 |
| Merck Patent GmbH | 5728 |
4 |
| Adionics | 26 |
4 |
| Other owners | 182 |