- 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 11/00 - Process control or regulation for heat treatments
Patent holdings for IPC class C21D 11/00
Total number of patents in this class: 541
10-year publication summary
|
44
|
33
|
38
|
54
|
41
|
48
|
44
|
42
|
36
|
14
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6067 |
25 |
| ArcelorMittal | 1887 |
23 |
| SMS Group GmbH | 1029 |
21 |
| Nippon Steel Corporation | 5649 |
20 |
| Fives Stein | 96 |
15 |
| Baoshan Iron & Steel Co., Ltd. | 832 |
13 |
| Siemens AG | 24990 |
10 |
| NTN Corporation | 5008 |
9 |
| Primetals Technologies Austria GmbH | 479 |
7 |
| Kanto Yakin Kogyo Co., Ltd. | 16 |
6 |
| Novelis Inc. | 656 |
6 |
| Primetals Technologies Germany GmbH | 180 |
6 |
| GM Global Technology Operations LLC | 13620 |
5 |
| Ford Global Technologies, LLC | 19702 |
5 |
| California Institute of Technology | 3884 |
5 |
| Aktiebolaget SKF | 2700 |
5 |
| Danieli & C. Officine Meccaniche S.p.A. | 680 |
5 |
| Ebner Industrieofenbau GmbH | 132 |
5 |
| Neturen Co., Ltd. | 193 |
5 |
| POSCO Co., Ltd. | 1059 |
5 |
| Other owners | 340 |