- 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: 612
10-year publication summary
|
29
|
35
|
49
|
38
|
45
|
43
|
41
|
38
|
44
|
45
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 7054 |
35 |
| ArcelorMittal | 2396 |
32 |
| SMS Group GmbH | 1141 |
27 |
| Fives Stein | 105 |
19 |
| Nippon Steel Corporation | 6482 |
19 |
| Baoshan Iron & Steel Co., Ltd. | 990 |
17 |
| Siemens AG | 24333 |
10 |
| Kanto Yakin Kogyo Co., Ltd. | 20 |
8 |
| NTN Corporation | 4969 |
7 |
| Danieli & C. Officine Meccaniche S.p.A. | 716 |
7 |
| Novelis Inc. | 769 |
7 |
| Primetals Technologies Austria GmbH | 550 |
7 |
| Wuhan Iron and Steel Company Limited | 29 |
7 |
| Ebner Industrieofenbau GmbH | 142 |
6 |
| Neturen Co., Ltd. | 198 |
6 |
| Primetals Technologies Germany GmbH | 208 |
6 |
| Nanjing Iron&Steel Co.,Ltd. | 171 |
6 |
| Ford Global Technologies, LLC | 20932 |
5 |
| California Institute of Technology | 3997 |
5 |
| Aktiebolaget SKF | 3017 |
5 |
| Other owners | 371 |