- 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: 1079
10-year publication summary
|
36
|
40
|
47
|
42
|
72
|
86
|
109
|
124
|
137
|
110
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sumitomo Metal Mining Co., Ltd. | 1978 |
44 |
| Freeport Minerals Corporation | 136 |
34 |
| JX Nippon Mining & Metals Corporation | 1461 |
22 |
| JX Metals Circular Solutions Co., Ltd. | 82 |
20 |
| JFE Steel Corporation | 7549 |
17 |
| Asaka Riken Co., Ltd. | 54 |
15 |
| Korea Zinc Co., Ltd. | 171 |
15 |
| Electrasteel, Inc. | 49 |
15 |
| Guangdong Brunp Recycling Technology Co., Ltd | 1267 |
13 |
| Hunan Brunp Recycling Technology Co., Ltd. | 1226 |
13 |
| Gem Co., Ltd. | 356 |
11 |
| Technological Resources Pty. Limited | 442 |
11 |
| LiLAC Solutions, Inc. | 68 |
11 |
| PT Qmb New Energy Materials | 253 |
11 |
| Mitsubishi Materials Corporation | 2475 |
10 |
| Kemco | 54 |
10 |
| Icsip Pty Ltd | 21 |
9 |
| Centre National de La Recherche Scientifique | 11026 |
8 |
| Murata Manufacturing Co., Ltd. | 25758 |
8 |
| Purdue Research Foundation | 3921 |
8 |
| Other owners | 774 |