- 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 11/00 - Process control or regulation for heat treatments
Patent holdings for IPC class C21D 11/00
Total number of patents in this class: 665
10-year publication summary
|
38
|
55
|
41
|
48
|
46
|
43
|
40
|
46
|
51
|
49
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 7660 |
46 |
| ArcelorMittal | 2749 |
42 |
| SMS Group GmbH | 1212 |
32 |
| Baoshan Iron & Steel Co., Ltd. | 1134 |
19 |
| Nippon Steel Corporation | 7050 |
19 |
| Fives Stein | 107 |
17 |
| Siemens AG | 23913 |
10 |
| Kanto Yakin Kogyo Co., Ltd. | 20 |
8 |
| Primetals Technologies Austria GmbH | 579 |
8 |
| Wuhan Iron and Steel Company Limited | 34 |
8 |
| Danieli & C. Officine Meccaniche S.p.A. | 721 |
7 |
| Novelis Inc. | 787 |
7 |
| Ebner Industrieofenbau GmbH | 142 |
6 |
| Neturen Co., Ltd. | 198 |
6 |
| POSCO Co., Ltd. | 2031 |
6 |
| Primetals Technologies Germany GmbH | 226 |
6 |
| Nanjing Iron&Steel Co.,Ltd. | 188 |
6 |
| Ford Global Technologies, LLC | 21624 |
5 |
| California Institute of Technology | 4045 |
5 |
| Aktiebolaget SKF | 3156 |
5 |
| Other owners | 397 |