- 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: 596
10-year publication summary
|
37
|
33
|
49
|
31
|
33
|
43
|
35
|
55
|
39
|
32
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Umicore | 768 |
33 |
| Northeastern University | 572 |
21 |
| Metallo Belgium | 50 |
18 |
| Altek Europe Limited | 36 |
13 |
| Metso Metals Oy | 226 |
9 |
| Kunming University of Science and Technology | 244 |
8 |
| Nippon Steel Corporation | 6814 |
8 |
| Hyundai Steel Company | 526 |
7 |
| SMS Group GmbH | 1188 |
7 |
| Guangdong Brunp Recycling Technology Co., Ltd | 1258 |
6 |
| Hunan Brunp Recycling Technology Co., Ltd. | 1221 |
6 |
| Outotec (Finland) Oy | 455 |
6 |
| ArcelorMittal | 2654 |
5 |
| Beijing University of Technology | 519 |
5 |
| Glencore Technology Pty Ltd | 53 |
5 |
| Loesche GmbH | 79 |
5 |
| China ENFI Engineering Corp. | 108 |
5 |
| Danieli & C. Officine Meccaniche S.p.A. | 717 |
4 |
| Eco'ring | 15 |
4 |
| Eurecat S.A. | 95 |
4 |
| Other owners | 417 |