- 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: 194
10-year publication summary
|
9
|
13
|
9
|
11
|
15
|
15
|
11
|
31
|
23
|
15
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| GreenIron H2 AB | 26 |
14 |
| Carbon Technology Holdings, LLC | 185 |
10 |
| Metso Metals Oy | 205 |
9 |
| SMS Group GmbH | 1029 |
6 |
| JFE Steel Corporation | 6067 |
5 |
| Umicore | 542 |
5 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2865 |
4 |
| Outotec Oyj | 318 |
4 |
| POSCO | 2222 |
4 |
| Primetals Technologies Austria GmbH | 479 |
4 |
| Tata Steel Limited | 184 |
4 |
| Technological Resources Pty. Limited | 444 |
4 |
| Heraeus Deutschland GmbH & Co. KG | 643 |
3 |
| JX Nippon Mining & Metals Corporation | 1576 |
3 |
| Luossavaara-Kiirunavaara AB | 78 |
3 |
| Pukyong National University Industry-University Cooperation Foundation | 254 |
3 |
| Research Institute of Industrial Science & Technology | 378 |
3 |
| Rio Tinto ALCAN International Limited | 214 |
3 |
| SK Innovation Co., Ltd. | 1015 |
3 |
| Hybrit Development AB | 38 |
3 |
| Other owners | 97 |