- All sections
- C - Chemistrymetallurgy
- C22B - Production or refining of metalspretreatment 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: 308
10-year publication summary
|
9
|
11
|
15
|
15
|
11
|
33
|
27
|
33
|
52
|
32
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| GreenIron H2 AB | 32 |
18 |
| Nippon Steel Corporation | 6895 |
15 |
| Carbon Technology Holdings, LLC | 233 |
13 |
| JFE Steel Corporation | 7549 |
10 |
| Korea Zinc Co., Ltd. | 171 |
9 |
| Metso Metals Oy | 225 |
9 |
| Kemco | 54 |
9 |
| Umicore | 775 |
7 |
| Luossavaara-Kiirunavaara AB | 131 |
6 |
| SMS Group GmbH | 1200 |
6 |
| Pukyong National University Industry-University Cooperation Foundation | 376 |
5 |
| Sumitomo Metal Mining Co., Ltd. | 1978 |
5 |
| Technological Resources Pty. Limited | 442 |
5 |
| Hybrit Development AB | 74 |
5 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2836 |
4 |
| Outotec Oyj | 235 |
4 |
| POSCO | 2142 |
4 |
| Primetals Technologies Austria GmbH | 575 |
4 |
| Omnis Advanced Technologies, LLC | 15 |
4 |
| BASF SE | 21308 |
3 |
| Other owners | 163 |