- 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 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: 375
10-year publication summary
|
38
|
33
|
31
|
26
|
35
|
21
|
18
|
32
|
21
|
5
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 5649 |
29 |
| ArcelorMittal | 1887 |
25 |
| ThyssenKrupp Steel Europe AG | 924 |
19 |
| JFE Steel Corporation | 6067 |
16 |
| ATI Properties LLC | 202 |
10 |
| ArcelorMittal France | 102 |
8 |
| Consolidated Metal Products, Inc. | 16 |
8 |
| ArcelorMittal Investigacion y Desarrollo SL | 209 |
7 |
| Baoshan Iron & Steel Co., Ltd. | 832 |
7 |
| Nucor Corporation | 425 |
7 |
| The Boeing Company | 19843 |
6 |
| Voestalpine Metal Forming GmbH | 56 |
6 |
| California Institute of Technology | 3884 |
5 |
| Hyundai Steel Company | 310 |
5 |
| POSCO Co., Ltd. | 1059 |
5 |
| Caterpillar Inc. | 8877 |
4 |
| NTN Corporation | 5008 |
4 |
| Northwestern University | 3112 |
4 |
| Daido Steel Co., Ltd. | 237 |
4 |
| Magna International Inc. | 1236 |
4 |
| Other owners | 192 |