- 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: 309
10-year publication summary
|
27
|
23
|
23
|
25
|
24
|
18
|
23
|
17
|
17
|
33
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 7549 |
43 |
| ArcelorMittal | 2680 |
42 |
| Fives Stein | 108 |
20 |
| POSCO Co., Ltd. | 2015 |
20 |
| Nippon Steel Corporation | 6895 |
9 |
| NV Bekaert SA | 725 |
9 |
| SMS Group GmbH | 1200 |
7 |
| Cockerill Maintenance & Ingenierie SA | 79 |
5 |
| Primetals Technologies Japan, Ltd. | 180 |
5 |
| Siemens AG | 24020 |
4 |
| Nippon Steel & Sumitomo Metal Corporation | 1981 |
4 |
| Novelis Inc. | 781 |
4 |
| Primetals Technologies Austria GmbH | 575 |
4 |
| Wisdri Engineering & Research Incorporation Limited | 222 |
4 |
| Michelin Recherche et Technique S.A. | 2083 |
3 |
| ArcelorMittal France | 69 |
3 |
| Ebner Industrieofenbau GmbH | 142 |
3 |
| Hydro-Quebec | 635 |
3 |
| Hyundai Steel Company | 535 |
3 |
| POSCO | 2142 |
3 |
| Other owners | 111 |