- 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: 1027
10-year publication summary
|
63
|
42
|
83
|
75
|
73
|
75
|
115
|
107
|
113
|
66
|
| 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. | 1760 |
31 |
| BASF SE | 20777 |
23 |
| Li-Cycle Corp. | 41 |
14 |
| Guangdong Brunp Recycling Technology Co., Ltd | 1185 |
13 |
| Hunan Brunp Recycling Technology Co., Ltd. | 1153 |
13 |
| Umicore | 628 |
13 |
| JX Nippon Mining & Metals Corporation | 1501 |
11 |
| Anglo American Technical & Sustainability Services Ltd | 59 |
11 |
| Hatch Ltd. | 212 |
9 |
| Novelis Inc. | 735 |
9 |
| Metso Outotec Finland Oy | 528 |
8 |
| Ecolab USA Inc. | 5451 |
7 |
| House of Metals Company Limited | 34 |
7 |
| Mitsubishi Materials Corporation | 2431 |
7 |
| Vale S.A. | 268 |
7 |
| Duesenfeld GmbH | 26 |
7 |
| Barrick Gold Corporation | 62 |
6 |
| JFE Steel Corporation | 6767 |
6 |
| Kyushu University, National University Corporation | 1643 |
6 |
| Outotec (Finland) Oy | 480 |
6 |
| Other owners | 813 |