- All sections
- C - Chemistrymetallurgy
- C22B - Production or refining of metalspretreatment of raw materials
- C22B 3/06 - Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions
Patent holdings for IPC class C22B 3/06
Total number of patents in this class: 880
10-year publication summary
|
47
|
36
|
40
|
47
|
41
|
72
|
86
|
109
|
111
|
72
|
| 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. | 1760 |
42 |
| JX Nippon Mining & Metals Corporation | 1501 |
25 |
| Freeport Minerals Corporation | 101 |
22 |
| Guangdong Brunp Recycling Technology Co., Ltd | 1185 |
13 |
| Hunan Brunp Recycling Technology Co., Ltd. | 1153 |
13 |
| JFE Steel Corporation | 6767 |
12 |
| Electrasteel, Inc. | 39 |
12 |
| Korea Zinc Co., Ltd. | 83 |
11 |
| Technological Resources Pty. Limited | 451 |
11 |
| JX Metals Circular Solutions Co., Ltd. | 46 |
11 |
| Asaka Riken Co., Ltd. | 45 |
8 |
| Mitsubishi Materials Corporation | 2431 |
8 |
| LiLAC Solutions, Inc. | 55 |
8 |
| Kemco | 33 |
8 |
| Purdue Research Foundation | 3564 |
7 |
| Gem Co., Ltd. | 213 |
7 |
| PT Qmb New Energy Materials | 144 |
7 |
| PT Gem Indonesia New Energy Materials | 142 |
7 |
| Murata Manufacturing Co., Ltd. | 24342 |
6 |
| BHP Billiton SSM Development Pty Ltd. | 30 |
6 |
| Other owners | 636 |