- All sections
- C - Chemistrymetallurgy
- C22B - Production or refining of metalspretreatment of raw materials
- C22B 1/02 - Roasting processes
Patent holdings for IPC class C22B 1/02
Total number of patents in this class: 865
10-year publication summary
|
18
|
22
|
25
|
32
|
44
|
47
|
91
|
124
|
125
|
72
|
| 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. | 1978 |
61 |
| Guangdong Brunp Recycling Technology Co., Ltd | 1267 |
37 |
| Hunan Brunp Recycling Technology Co., Ltd. | 1226 |
37 |
| JX Nippon Mining & Metals Corporation | 1461 |
22 |
| Korea Zinc Co., Ltd. | 171 |
20 |
| BASF SE | 21308 |
18 |
| Kemco | 54 |
16 |
| JX Metals Circular Solutions Co., Ltd. | 82 |
15 |
| Nemaska Lithium Inc. | 78 |
12 |
| Metso Finland Oy | 688 |
12 |
| LG Energy Solution, Ltd. | 19066 |
11 |
| Hunan Brunp EV Recycling Co., Ltd. | 378 |
10 |
| POSCO Holdings Inc. | 693 |
10 |
| Dowa ECO-SYSTEM Co., Ltd. | 58 |
8 |
| Gem Co., Ltd. | 356 |
8 |
| JFE Steel Corporation | 7549 |
8 |
| Mitsubishi Materials Corporation | 2475 |
8 |
| Hunan Brunp Vehicles Recycling Co., Ltd. | 75 |
8 |
| Northeastern University | 574 |
7 |
| The Boeing Company | 20163 |
6 |
| Other owners | 531 |