- All sections
- C - Chemistry; metallurgy
- C22B - Production or refining of metals; pretreatment of raw materials
- C22B 15/00 - Obtaining copper
Patent holdings for IPC class C22B 15/00
Total number of patents in this class: 1204
10-year publication summary
|
91
|
87
|
77
|
99
|
86
|
78
|
85
|
112
|
117
|
48
|
| 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 |
68 |
| JX Nippon Mining & Metals Corporation | 1576 |
42 |
| Freeport Minerals Corporation | 80 |
31 |
| Outotec (Finland) Oy | 491 |
31 |
| Outotec Oyj | 318 |
31 |
| Metso Metals Oy | 205 |
28 |
| BASF SE | 19740 |
24 |
| Technological Resources Pty. Limited | 444 |
20 |
| Jetti Resources, LLC | 30 |
19 |
| BHP Chile Inc. | 18 |
18 |
| FLSmidth A/S | 923 |
17 |
| Metso Outotec Finland Oy | 795 |
17 |
| Metallo Belgium | 53 |
16 |
| Umicore | 542 |
15 |
| Guangdong Brunp Recycling Technology Co., Ltd | 674 |
14 |
| Hunan Brunp Recycling Technology Co., Ltd. | 622 |
14 |
| Sherritt International Corporation | 30 |
13 |
| Kyushu University, National University Corporation | 1572 |
12 |
| Northeastern University | 493 |
11 |
| Nova Mineralis S.A. | 15 |
11 |
| Other owners | 752 |