- 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: 769
10-year publication summary
|
19
|
15
|
20
|
21
|
27
|
36
|
33
|
77
|
113
|
104
|
| 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. | 1794 |
51 |
| Guangdong Brunp Recycling Technology Co., Ltd | 1246 |
37 |
| Hunan Brunp Recycling Technology Co., Ltd. | 1215 |
37 |
| JX Nippon Mining & Metals Corporation | 1479 |
22 |
| Korea Zinc Co., Ltd. | 104 |
19 |
| Kemco | 44 |
15 |
| BASF SE | 21098 |
13 |
| Nemaska Lithium Inc. | 73 |
12 |
| JX Metals Circular Solutions Co., Ltd. | 67 |
12 |
| LG Energy Solution, Ltd. | 16038 |
10 |
| Hunan Brunp EV Recycling Co., Ltd. | 375 |
10 |
| Dowa ECO-SYSTEM Co., Ltd. | 56 |
8 |
| JFE Steel Corporation | 7074 |
8 |
| Mitsubishi Materials Corporation | 2470 |
8 |
| Hunan Brunp Vehicles Recycling Co., Ltd. | 75 |
8 |
| Northeastern University | 548 |
7 |
| The Boeing Company | 20186 |
6 |
| Hitachi Metals, Ltd. | 1957 |
6 |
| Gem Co., Ltd. | 226 |
6 |
| Metso Finland Oy | 621 |
6 |
| Other owners | 468 |