- 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 7/04 - Modifying the physical properties of iron or steel by deformation by cold working of the surface
Patent holdings for IPC class C21D 7/04
Total number of patents in this class: 140
10-year publication summary
|
11
|
8
|
23
|
11
|
8
|
7
|
5
|
7
|
8
|
5
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Maschinenfabrik Alfing Kessler GmbH | 54 |
10 |
| Nippon Steel Corporation | 6514 |
6 |
| Outokumpu Oyj | 261 |
4 |
| ThyssenKrupp Steel Europe AG | 962 |
4 |
| The Boeing Company | 20186 |
3 |
| Mitsubishi Heavy Industries, Ltd. | 8900 |
3 |
| AB Sandvik Coromant | 256 |
3 |
| ATI Properties LLC | 203 |
3 |
| East China University of Science and Technology | 527 |
3 |
| Sintokogio, Ltd. | 1166 |
3 |
| Epiroc Drilling Tools Aktiebolag | 82 |
3 |
| Sandvik Mining and Construction Tools AB | 178 |
3 |
| Honda Motor Co., Ltd. | 25784 |
2 |
| Medtronic Vascular, Inc. | 1492 |
2 |
| Murata Manufacturing Co., Ltd. | 25020 |
2 |
| Purdue Research Foundation | 3732 |
2 |
| ArcelorMittal | 2402 |
2 |
| AREVA Inc. | 30 |
2 |
| Atlas Copco Secoroc AB | 13 |
2 |
| MTU Aero Engines AG | 699 |
2 |
| Other owners | 76 |