- 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: 290
10-year publication summary
|
8
|
12
|
11
|
16
|
7
|
11
|
11
|
27
|
27
|
40
|
| 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. | 1794 |
17 |
| Guangdong Brunp Recycling Technology Co., Ltd | 1246 |
16 |
| Hunan Brunp Recycling Technology Co., Ltd. | 1215 |
16 |
| Hunan Brunp EV Recycling Co., Ltd. | 375 |
10 |
| BASF SE | 21098 |
8 |
| Asaka Riken Co., Ltd. | 51 |
8 |
| JX Nippon Mining & Metals Corporation | 1479 |
8 |
| Korea Zinc Co., Ltd. | 104 |
7 |
| Kemco | 44 |
7 |
| JX Metals Circular Solutions Co., Ltd. | 67 |
7 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10954 |
6 |
| Centre National de La Recherche Scientifique | 10706 |
5 |
| Changchun Institute of Applied Chemistry Chinese Academy of Sciences | 110 |
5 |
| Seren Technologies Limited | 9 |
5 |
| Merck Patent GmbH | 5752 |
4 |
| FUJIFILM Corporation | 29839 |
4 |
| Adionics | 24 |
4 |
| Umicore | 684 |
4 |
| Universite de Montpellier | 1021 |
4 |
| Igo Limited | 7 |
4 |
| Other owners | 141 |