- All sections
- C - Chemistrymetallurgy
- C21D - Modifying the physical structure of ferrous metalsgeneral devices for heat treatment of ferrous or non-ferrous metals or alloysmaking 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: 271
10-year publication summary
|
15
|
27
|
23
|
23
|
25
|
24
|
18
|
22
|
16
|
6
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| ArcelorMittal | 2254 |
39 |
| JFE Steel Corporation | 6806 |
35 |
| Fives Stein | 105 |
21 |
| Nippon Steel Corporation | 6195 |
9 |
| NV Bekaert SA | 749 |
9 |
| POSCO Co., Ltd. | 1558 |
7 |
| Cockerill Maintenance & Ingenierie SA | 80 |
5 |
| Ebner Industrieofenbau GmbH | 142 |
5 |
| Primetals Technologies Japan, Ltd. | 162 |
5 |
| Siemens AG | 24552 |
4 |
| Nippon Steel & Sumitomo Metal Corporation | 1988 |
4 |
| Novelis Inc. | 739 |
4 |
| SMS Group GmbH | 1117 |
4 |
| Michelin Recherche et Technique S.A. | 2195 |
3 |
| ArcelorMittal France | 86 |
3 |
| Hydro-Quebec | 649 |
3 |
| POSCO | 2188 |
3 |
| Primetals Technologies Austria GmbH | 529 |
3 |
| Compagnie Generale des Etablissements Michelin | 4728 |
3 |
| Wisdri Engineering & Research Incorporation Limited | 201 |
3 |
| Other owners | 99 |