- All sections
- C - Chemistrymetallurgy
- C22B - Production or refining of metalspretreatment of raw materials
- C22B 23/02 - Obtaining nickel or cobalt by dry processes
Patent holdings for IPC class C22B 23/02
Total number of patents in this class: 381
10-year publication summary
|
26
|
19
|
20
|
18
|
13
|
17
|
38
|
43
|
56
|
41
|
| 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. | 1779 |
89 |
| Umicore | 642 |
21 |
| Guangdong Brunp Recycling Technology Co., Ltd | 1240 |
15 |
| Hunan Brunp Recycling Technology Co., Ltd. | 1209 |
15 |
| BASF SE | 20926 |
8 |
| Korea Zinc Co., Ltd. | 89 |
8 |
| Research Institute of Industrial Science & Technology | 502 |
8 |
| JFE Steel Corporation | 6833 |
7 |
| POSCO Holdings Inc. | 331 |
6 |
| Metso Metals Oy | 206 |
6 |
| POSCO | 2187 |
5 |
| INVISTA North America, LLC | 152 |
5 |
| INV Nylon Chemicals Americas, LLC | 184 |
5 |
| Hunan Brunp Vehicles Recycling Co., Ltd. | 75 |
5 |
| Cngr Advanced Material Co., Ltd. | 22 |
5 |
| Kemco | 36 |
5 |
| JNC Corporation | 1552 |
4 |
| Nippon Yakin Kogyo Co., Ltd. | 63 |
4 |
| Northeastern University | 538 |
4 |
| Outotec (Finland) Oy | 480 |
4 |
| Other owners | 152 |