- 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: 647
10-year publication summary
|
29
|
37
|
36
|
27
|
27
|
38
|
32
|
61
|
76
|
49
|
| 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 | 1501 |
28 |
| Sumitomo Metal Mining Co., Ltd. | 1760 |
21 |
| Schlumberger Canada Limited | 7235 |
12 |
| Cidra Corporate Services, LLC | 91 |
12 |
| Schlumberger Technology Corporation | 10627 |
11 |
| Schlumberger Technology B.v. | 5148 |
9 |
| Services Petroliers Schlumberger | 5756 |
9 |
| Barrick Gold Corporation | 62 |
8 |
| Purdue Research Foundation | 3564 |
6 |
| DIC Corporation | 3750 |
6 |
| Guangdong Brunp Recycling Technology Co., Ltd | 1185 |
6 |
| Hunan Brunp Recycling Technology Co., Ltd. | 1153 |
6 |
| Johnson Matthey Public Limited Company | 1862 |
6 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10837 |
5 |
| National Institute of Advanced Industrial Science and Technology | 3784 |
5 |
| Daicel Corporation | 2329 |
5 |
| Kuraray Co., Ltd. | 3490 |
5 |
| Lanxess Deutschland GmbH | 1126 |
5 |
| Tosoh Corporation | 1264 |
5 |
| Galdieria Co., Ltd. | 9 |
5 |
| Other owners | 472 |