- All sections
- C - Chemistry; metallurgy
- C22B - Production or refining of metals; pretreatment 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: 514
10-year publication summary
32
|
29
|
37
|
36
|
27
|
26
|
38
|
32
|
52
|
19
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
JX Nippon Mining & Metals Corporation | 1576 |
28 |
Sumitomo Metal Mining Co., Ltd. | 1670 |
16 |
Cidra Corporate Services, LLC | 91 |
13 |
Barrick Gold Corporation | 73 |
8 |
Metso Outotec Finland Oy | 795 |
8 |
Schlumberger Technology Corporation | 9690 |
7 |
Schlumberger Canada Limited | 6913 |
7 |
Schlumberger Technology B.v. | 4951 |
6 |
National Institute of Advanced Industrial Science and Technology | 3677 |
6 |
Services Petroliers Schlumberger | 5426 |
6 |
Purdue Research Foundation | 3277 |
5 |
Johnson Matthey Public Limited Company | 1852 |
5 |
Kuraray Co., Ltd. | 3392 |
5 |
Lanxess Deutschland GmbH | 1104 |
5 |
Metso Minerals Oy | 152 |
5 |
Tosoh Corporation | 1127 |
5 |
Galdieria Co., Ltd. | 8 |
5 |
Sunresin New Materials Co.Ltd. | 20 |
5 |
Hitachi, Ltd. | 16452 |
4 |
Glencore Technology Pty Ltd | 46 |
4 |
Other owners | 361 |