- 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 7/06 - Modifying the physical properties of iron or steel by deformation by cold working of the surface by shot-peening or the like
Patent holdings for IPC class C21D 7/06
Total number of patents in this class: 452
10-year publication summary
|
36
|
27
|
35
|
26
|
31
|
26
|
34
|
15
|
18
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NHK Spring Co., Ltd. | 1766 |
36 |
| Nippon Steel Corporation | 5991 |
29 |
| Sintokogio, Ltd. | 1165 |
24 |
| Mitsubishi Heavy Industries, Ltd. | 8515 |
13 |
| The Boeing Company | 19901 |
9 |
| Safran Aircraft Engines | 6024 |
8 |
| Chuo Hatsujo Kabushiki Kaisha | 127 |
7 |
| NTN Corporation | 4980 |
6 |
| Fuji Kihan Co., Ltd. | 25 |
6 |
| Jiangsu University | 1041 |
6 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2905 |
6 |
| Sumitomo Metal Industries, Ltd. | 420 |
6 |
| Rtx Corporation | 9077 |
6 |
| Honda Motor Co., Ltd. | 24865 |
5 |
| Toyota Motor Corporation | 30345 |
5 |
| JFE Steel Corporation | 6538 |
5 |
| GE Infrastructure Technology, LLC | 6109 |
5 |
| Nippon Steel SG Wire Co., Ltd. | 14 |
5 |
| Siemens AG | 24572 |
4 |
| SAFRAN S.A. | 569 |
4 |
| Other owners | 257 |