- 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: 250
10-year publication summary
|
13
|
9
|
11
|
15
|
15
|
11
|
33
|
27
|
30
|
30
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| GreenIron H2 AB | 32 |
18 |
| Carbon Technology Holdings, LLC | 211 |
12 |
| Korea Zinc Co., Ltd. | 87 |
9 |
| Metso Metals Oy | 202 |
9 |
| Kemco | 36 |
9 |
| JFE Steel Corporation | 6809 |
6 |
| Luossavaara-Kiirunavaara AB | 112 |
6 |
| SMS Group GmbH | 1118 |
6 |
| Technological Resources Pty. Limited | 452 |
5 |
| Umicore | 639 |
5 |
| Hybrit Development AB | 59 |
5 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2877 |
4 |
| Outotec Oyj | 279 |
4 |
| POSCO | 2188 |
4 |
| Primetals Technologies Austria GmbH | 530 |
4 |
| Pukyong National University Industry-University Cooperation Foundation | 336 |
4 |
| Sumitomo Metal Mining Co., Ltd. | 1766 |
4 |
| Heraeus Deutschland GmbH & Co. KG | 419 |
3 |
| JX Nippon Mining & Metals Corporation | 1490 |
3 |
| Nippon Steel Corporation | 6203 |
3 |
| Other owners | 127 |