- All sections
- C - Chemistrymetallurgy
- C22B - Production or refining of metalspretreatment of raw materials
- C22B 7/04 - Working-up slag
Patent holdings for IPC class C22B 7/04
Total number of patents in this class: 525
10-year publication summary
|
34
|
32
|
27
|
43
|
28
|
30
|
37
|
29
|
43
|
22
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Umicore | 654 |
26 |
| Northeastern University | 542 |
21 |
| Metallo Belgium | 53 |
18 |
| Altek Europe Limited | 37 |
13 |
| Kunming University of Science and Technology | 189 |
8 |
| Hyundai Steel Company | 431 |
7 |
| SMS Group GmbH | 1129 |
7 |
| Metso Metals Oy | 208 |
7 |
| Guangdong Brunp Recycling Technology Co., Ltd | 1244 |
6 |
| Hunan Brunp Recycling Technology Co., Ltd. | 1213 |
6 |
| Loesche GmbH | 81 |
6 |
| Outotec (Finland) Oy | 480 |
6 |
| ArcelorMittal | 2317 |
5 |
| Beijing University of Technology | 496 |
5 |
| Glencore Technology Pty Ltd | 51 |
5 |
| Lixivia, Inc. | 32 |
5 |
| Nippon Steel Corporation | 6321 |
5 |
| China ENFI Engineering Corp. | 103 |
5 |
| Eco'ring | 14 |
4 |
| Eurecat S.A. | 90 |
4 |
| Other owners | 356 |