- All sections
- C - Chemistry; metallurgy
- C21D - Modifying the physical structure of ferrous metals; general devices for heat treatment of ferrous or non-ferrous metals or alloys; making metal malleable, e.g. by decarburisation or tempering
- C21D 9/573 - Continuous furnaces for strip or wire with cooling
Patent holdings for IPC class C21D 9/573
Total number of patents in this class: 268
10-year publication summary
|
19
|
15
|
27
|
23
|
23
|
25
|
24
|
18
|
22
|
8
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| ArcelorMittal | 1887 |
38 |
| JFE Steel Corporation | 6067 |
34 |
| Fives Stein | 96 |
17 |
| Nippon Steel Corporation | 5649 |
12 |
| NV Bekaert SA | 750 |
8 |
| Cockerill Maintenance & Ingenierie SA | 82 |
7 |
| POSCO Co., Ltd. | 1059 |
6 |
| Primetals Technologies Japan, Ltd. | 143 |
5 |
| Siemens AG | 24990 |
4 |
| ArcelorMittal France | 102 |
4 |
| Ebner Industrieofenbau GmbH | 132 |
4 |
| Nippon Steel & Sumitomo Metal Corporation | 1990 |
4 |
| Novelis Inc. | 656 |
4 |
| POSCO | 2222 |
4 |
| Michelin Recherche et Technique S.A. | 2328 |
3 |
| Hydro-Quebec | 637 |
3 |
| LOI Thermprocess GmbH | 41 |
3 |
| Primetals Technologies Austria GmbH | 479 |
3 |
| Schwartz GmbH | 58 |
3 |
| SMS Group GmbH | 1029 |
3 |
| Other owners | 99 |