- 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 7/06 - 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: 461
10-year publication summary
|
27
|
35
|
26
|
31
|
26
|
34
|
18
|
22
|
14
|
8
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NHK Spring Co., Ltd. | 2034 |
38 |
| Nippon Steel Corporation | 7102 |
32 |
| Sintokogio, Ltd. | 1211 |
23 |
| Mitsubishi Heavy Industries, Ltd. | 9271 |
11 |
| The Boeing Company | 20232 |
10 |
| JFE Steel Corporation | 7692 |
10 |
| Chuo Hatsujo Kabushiki Kaisha | 125 |
7 |
| Fuji Kihan Co., Ltd. | 23 |
7 |
| Safran Aircraft Engines | 6811 |
7 |
| NTN Corporation | 4936 |
6 |
| Jiangsu University | 1179 |
6 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2845 |
6 |
| Rtx Corporation | 10240 |
6 |
| Honda Motor Co., Ltd. | 26684 |
5 |
| Toyota Motor Corporation | 36465 |
5 |
| POSCO | 2143 |
5 |
| Sumitomo Metal Industries, Ltd. | 304 |
5 |
| GE Infrastructure Technology, LLC | 6147 |
5 |
| Nippon Steel SG Wire Co., Ltd. | 14 |
5 |
| Siemens AG | 23943 |
4 |
| Other owners | 258 |