- 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 7/13 - Modifying the physical properties of iron or steel by deformation by hot working
Patent holdings for IPC class C21D 7/13
Total number of patents in this class: 416
10-year publication summary
|
33
|
31
|
26
|
35
|
21
|
19
|
33
|
23
|
37
|
18
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| ArcelorMittal | 2285 |
55 |
| Nippon Steel Corporation | 6238 |
30 |
| ThyssenKrupp Steel Europe AG | 955 |
21 |
| JFE Steel Corporation | 6840 |
16 |
| Baoshan Iron & Steel Co., Ltd. | 964 |
11 |
| ATI Properties LLC | 205 |
10 |
| Consolidated Metal Products, Inc. | 16 |
8 |
| Voestalpine Metal Forming GmbH | 77 |
8 |
| ArcelorMittal France | 87 |
7 |
| ArcelorMittal Investigacion y Desarrollo SL | 209 |
7 |
| Nucor Corporation | 416 |
7 |
| The Boeing Company | 20043 |
6 |
| California Institute of Technology | 3976 |
5 |
| Hyundai Steel Company | 427 |
5 |
| Magna International Inc. | 1226 |
5 |
| POSCO Co., Ltd. | 1568 |
5 |
| Caterpillar Inc. | 9548 |
4 |
| NTN Corporation | 4976 |
4 |
| Northwestern University | 3389 |
4 |
| Daido Steel Co., Ltd. | 270 |
4 |
| Other owners | 194 |