- 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: 318
10-year publication summary
|
17
|
15
|
17
|
7
|
13
|
11
|
40
|
34
|
49
|
19
|
| 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. | 1939 |
17 |
| Guangdong Brunp Recycling Technology Co., Ltd | 1250 |
16 |
| Hunan Brunp Recycling Technology Co., Ltd. | 1219 |
16 |
| Hunan Brunp EV Recycling Co., Ltd. | 376 |
10 |
| BASF SE | 21151 |
8 |
| Asaka Riken Co., Ltd. | 53 |
8 |
| JX Nippon Mining & Metals Corporation | 1464 |
8 |
| Korea Zinc Co., Ltd. | 159 |
7 |
| Kemco | 50 |
7 |
| JX Metals Circular Solutions Co., Ltd. | 78 |
7 |
| FUJIFILM Corporation | 30296 |
6 |
| Commissariat à l'énergie atomique et aux energies alternatives | 11020 |
5 |
| Changchun Institute of Applied Chemistry Chinese Academy of Sciences | 110 |
5 |
| Yara International ASA | 882 |
5 |
| Seren Technologies Limited | 9 |
5 |
| Merck Patent GmbH | 5669 |
4 |
| Centre National de La Recherche Scientifique | 10895 |
4 |
| Adionics | 26 |
4 |
| Umicore | 729 |
4 |
| Igo Limited | 8 |
4 |
| Other owners | 168 |