- All sections
- C - Chemistrymetallurgy
- C22B - Production or refining of metalspretreatment of raw materials
- C22B 15/00 - Obtaining copper
Patent holdings for IPC class C22B 15/00
Total number of patents in this class: 1365
10-year publication summary
|
87
|
77
|
99
|
86
|
78
|
87
|
113
|
123
|
142
|
78
|
| 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. | 1777 |
77 |
| Freeport Minerals Corporation | 107 |
44 |
| JX Nippon Mining & Metals Corporation | 1489 |
38 |
| BASF SE | 20912 |
36 |
| Outotec (Finland) Oy | 480 |
29 |
| Outotec Oyj | 278 |
29 |
| Metso Metals Oy | 206 |
29 |
| Jetti Resources, LLC | 37 |
24 |
| Technological Resources Pty. Limited | 452 |
22 |
| Umicore | 640 |
20 |
| BHP Chile Inc. | 19 |
18 |
| Guangdong Brunp Recycling Technology Co., Ltd | 1236 |
18 |
| Hunan Brunp Recycling Technology Co., Ltd. | 1205 |
18 |
| FLSmidth A/S | 774 |
17 |
| Metallo Belgium | 53 |
16 |
| Kyushu University, National University Corporation | 1654 |
13 |
| Sherritt International Corporation | 29 |
12 |
| Metso Finland Oy | 431 |
12 |
| Northeastern University | 538 |
11 |
| Nova Mineralis S.A. | 13 |
11 |
| Other owners | 871 |