- All sections
- C - Chemistrymetallurgy
- C22B - Production or refining of metalspretreatment of raw materials
- C22B 1/00 - Preliminary treatment of ores or scrap
Patent holdings for IPC class C22B 1/00
Total number of patents in this class: 1109
10-year publication summary
|
55
|
36
|
60
|
57
|
59
|
60
|
87
|
90
|
109
|
131
|
| 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 |
32 |
| BASF SE | 21098 |
26 |
| Umicore | 684 |
16 |
| Guangdong Brunp Recycling Technology Co., Ltd | 1246 |
13 |
| Hunan Brunp Recycling Technology Co., Ltd. | 1215 |
13 |
| 1001297676 Ontario Inc. | 27 |
13 |
| Anglo American Technical & Sustainability Services Ltd | 65 |
11 |
| Sumitomo Chemical Company, Limited | 9109 |
10 |
| JX Nippon Mining & Metals Corporation | 1479 |
10 |
| Novelis Inc. | 769 |
9 |
| JX Metals Circular Solutions Co., Ltd. | 67 |
9 |
| Hatch Ltd. | 215 |
8 |
| Ecolab USA Inc. | 5601 |
7 |
| House of Metals Company Limited | 34 |
7 |
| JFE Steel Corporation | 7074 |
7 |
| Mitsubishi Materials Corporation | 2470 |
7 |
| Vale S.A. | 274 |
7 |
| Duesenfeld GmbH | 28 |
7 |
| Metso Metals Oy | 211 |
7 |
| Kyushu University, National University Corporation | 1669 |
6 |
| Other owners | 884 |