- All sections
- C - Chemistry; metallurgy
- C22B - Production or refining of metals; pretreatment of raw materials
- C22B 7/04 - Working-up slag
Patent holdings for IPC class C22B 7/04
Total number of patents in this class: 470
10-year publication summary
|
44
|
42
|
37
|
33
|
49
|
31
|
33
|
43
|
31
|
13
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Northeastern University | 493 |
21 |
| Umicore | 542 |
21 |
| Metallo Belgium | 53 |
18 |
| Altek Europe Limited | 37 |
13 |
| Hyundai Steel Company | 310 |
7 |
| Loesche GmbH | 78 |
7 |
| Kunming University of Science and Technology | 117 |
6 |
| Lixivia, Inc. | 36 |
6 |
| Outotec (Finland) Oy | 491 |
6 |
| SMS Group GmbH | 1029 |
6 |
| Metso Metals Oy | 205 |
6 |
| Beijing University of Technology | 437 |
5 |
| Nippon Steel Corporation | 5649 |
5 |
| China ENFI Engineering Corp. | 91 |
5 |
| ArcelorMittal | 1887 |
4 |
| Eco'ring | 12 |
4 |
| Eurecat S.A. | 85 |
4 |
| Glencore Technology Pty Ltd | 46 |
4 |
| Guangdong Brunp Recycling Technology Co., Ltd | 674 |
4 |
| Hatch Ltd. | 219 |
4 |
| Other owners | 314 |