- 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: 1106
10-year publication summary
|
36
|
40
|
47
|
42
|
72
|
86
|
109
|
124
|
140
|
134
|
| 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. | 2017 |
45 |
| Freeport Minerals Corporation | 148 |
37 |
| JX Nippon Mining & Metals Corporation | 1451 |
22 |
| JX Metals Circular Solutions Co., Ltd. | 88 |
22 |
| JFE Steel Corporation | 7692 |
17 |
| Asaka Riken Co., Ltd. | 53 |
15 |
| Korea Zinc Co., Ltd. | 175 |
15 |
| Electrasteel, Inc. | 49 |
15 |
| Guangdong Brunp Recycling Technology Co., Ltd | 1272 |
13 |
| Hunan Brunp Recycling Technology Co., Ltd. | 1227 |
13 |
| Gem Co., Ltd. | 362 |
11 |
| Technological Resources Pty. Limited | 443 |
11 |
| LiLAC Solutions, Inc. | 70 |
11 |
| PT Qmb New Energy Materials | 257 |
11 |
| Mitsubishi Materials Corporation | 2485 |
10 |
| Icsip Pty Ltd | 21 |
9 |
| Kemco | 55 |
9 |
| Centre National de La Recherche Scientifique | 11143 |
8 |
| Murata Manufacturing Co., Ltd. | 26029 |
8 |
| Purdue Research Foundation | 3993 |
8 |
| Other owners | 796 |