- All sections
- C - Chemistry; metallurgy
- C22B - Production or refining of metals; pretreatment 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: 690
10-year publication summary
|
35
|
47
|
36
|
40
|
47
|
40
|
72
|
86
|
93
|
31
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sumitomo Metal Mining Co., Ltd. | 1670 |
40 |
| JX Nippon Mining & Metals Corporation | 1576 |
28 |
| Freeport Minerals Corporation | 80 |
14 |
| Technological Resources Pty. Limited | 444 |
10 |
| JFE Steel Corporation | 6067 |
7 |
| Purdue Research Foundation | 3277 |
6 |
| Asaka Riken Co., Ltd. | 35 |
6 |
| BHP Billiton SSM Development Pty Ltd. | 30 |
6 |
| Her Majesty The Queen in Right of Canada AS represented by The Minister of Natural Resources Canada | 89 |
6 |
| Metso Outotec Finland Oy | 795 |
6 |
| Rio Tinto Technological Resources Inc. | 13 |
6 |
| JX Metals Corporation | 111 |
6 |
| Sumitomo Electric Industries, Ltd. | 14131 |
5 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10525 |
5 |
| Toray Industries, Inc. | 6652 |
5 |
| Battelle Memorial Institute | 2356 |
5 |
| Barrick Gold Corporation | 73 |
5 |
| Central South University | 364 |
5 |
| Nemaska Lithium Inc. | 69 |
5 |
| Orbite Aluminae Inc. | 14 |
5 |
| Other owners | 509 |