- All sections
- C - Chemistry; metallurgy
- C22B - Production or refining of metals; pretreatment of raw materials
- C22B 5/12 - Dry processes by gases
Patent holdings for IPC class C22B 5/12
Total number of patents in this class: 207
10-year publication summary
|
13
|
9
|
11
|
15
|
15
|
11
|
31
|
25
|
26
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| GreenIron H2 AB | 30 |
15 |
| Carbon Technology Holdings, LLC | 199 |
10 |
| Metso Metals Oy | 223 |
9 |
| SMS Group GmbH | 1078 |
6 |
| JFE Steel Corporation | 6538 |
5 |
| Umicore | 597 |
5 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2905 |
4 |
| Luossavaara-Kiirunavaara AB | 82 |
4 |
| Outotec Oyj | 302 |
4 |
| POSCO | 2204 |
4 |
| Primetals Technologies Austria GmbH | 509 |
4 |
| Tata Steel Limited | 190 |
4 |
| Technological Resources Pty. Limited | 443 |
4 |
| Hybrit Development AB | 48 |
4 |
| Heraeus Deutschland GmbH & Co. KG | 437 |
3 |
| JX Nippon Mining & Metals Corporation | 1526 |
3 |
| Pukyong National University Industry-University Cooperation Foundation | 311 |
3 |
| Research Institute of Industrial Science & Technology | 447 |
3 |
| Rio Tinto ALCAN International Limited | 216 |
3 |
| SK Innovation Co., Ltd. | 1199 |
3 |
| Other owners | 107 |