- All sections
- C - Chemistry; metallurgy
- C22B - Production or refining of metals; pretreatment of raw materials
- C22B 4/00 - Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
Patent holdings for IPC class C22B 4/00
Total number of patents in this class: 105
10-year publication summary
|
13
|
9
|
6
|
5
|
6
|
4
|
8
|
3
|
1
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Metallo Belgium | 53 |
5 |
| Centre National de La Recherche Scientifique | 9632 |
4 |
| Siemens AG | 24990 |
3 |
| Clene Nanomedicine, Inc. | 32 |
3 |
| Technological Resources Pty. Limited | 444 |
3 |
| Ecole Nationale Superieure de Chimie de Paris | 48 |
2 |
| Elkem AS | 66 |
2 |
| Elkem ASA | 205 |
2 |
| Kobe Steel, Ltd. | 912 |
2 |
| Korea Hydro & Nuclear Power Co., Ltd. | 383 |
2 |
| Umicore | 542 |
2 |
| Paris Sciences et Lettres - Quartier Latin | 170 |
2 |
| Innceinnmat, S.L. | 3 |
2 |
| Sishen Iron Ore Company (Proprietary) Limited | 5 |
2 |
| Clean Resources Pte. Ltd | 6 |
2 |
| Tetronics Technologies Limited | 5 |
2 |
| General Electric Company | 18133 |
1 |
| Evonik Degussa GmbH | 1574 |
1 |
| Huawei Technologies Co., Ltd. | 100781 |
1 |
| The Board of Trustees of the University of Illinois | 2623 |
1 |
| Other owners | 61 |