- 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: 563
10-year publication summary
|
32
|
27
|
43
|
28
|
30
|
37
|
30
|
43
|
36
|
8
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Umicore | 708 |
30 |
| Northeastern University | 555 |
21 |
| Metallo Belgium | 53 |
18 |
| Altek Europe Limited | 36 |
13 |
| Metso Metals Oy | 217 |
9 |
| Kunming University of Science and Technology | 210 |
8 |
| Hyundai Steel Company | 473 |
7 |
| SMS Group GmbH | 1149 |
7 |
| Guangdong Brunp Recycling Technology Co., Ltd | 1248 |
6 |
| Hunan Brunp Recycling Technology Co., Ltd. | 1217 |
6 |
| Loesche GmbH | 81 |
6 |
| Outotec (Finland) Oy | 459 |
6 |
| ArcelorMittal | 2462 |
5 |
| Beijing University of Technology | 511 |
5 |
| Glencore Technology Pty Ltd | 54 |
5 |
| Lixivia, Inc. | 31 |
5 |
| Nippon Steel Corporation | 6607 |
5 |
| China ENFI Engineering Corp. | 106 |
5 |
| Eco'ring | 15 |
4 |
| Eurecat S.A. | 91 |
4 |
| Other owners | 388 |