- All sections
- C - Chemistrymetallurgy
- C22B - Production or refining of metalspretreatment of raw materials
- C22B 3/24 - Treatment or purification of solutions, e.g. obtained by leaching by physical processes, e.g. by filtration, by magnetic means by adsorption on solid substances, e.g. by extraction with solid resins
Patent holdings for IPC class C22B 3/24
Total number of patents in this class: 674
10-year publication summary
|
23
|
28
|
28
|
24
|
22
|
32
|
27
|
47
|
73
|
74
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JX Nippon Mining & Metals Corporation | 1487 |
28 |
| Sumitomo Metal Mining Co., Ltd. | 1787 |
21 |
| Schlumberger Technology Corporation | 10848 |
15 |
| Schlumberger Canada Limited | 7357 |
15 |
| Cidra Corporate Services, LLC | 95 |
12 |
| Schlumberger Technology B.v. | 5184 |
10 |
| Services Petroliers Schlumberger | 5823 |
10 |
| Barrick Gold Corporation | 53 |
8 |
| Daicel Corporation | 2374 |
7 |
| Guangdong Brunp Recycling Technology Co., Ltd | 1244 |
7 |
| Hunan Brunp Recycling Technology Co., Ltd. | 1213 |
7 |
| Metso Finland Oy | 460 |
7 |
| Purdue Research Foundation | 3654 |
6 |
| DIC Corporation | 3810 |
6 |
| Johnson Matthey Public Limited Company | 1866 |
6 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10936 |
5 |
| National Institute of Advanced Industrial Science and Technology | 3797 |
5 |
| BYD Company Limited | 5081 |
5 |
| Kuraray Co., Ltd. | 3510 |
5 |
| Lanxess Deutschland GmbH | 1113 |
5 |
| Other owners | 484 |