- 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: 459
10-year publication summary
|
36
|
27
|
35
|
26
|
31
|
26
|
34
|
17
|
20
|
6
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NHK Spring Co., Ltd. | 1836 |
36 |
| Nippon Steel Corporation | 6181 |
31 |
| Sintokogio, Ltd. | 1166 |
24 |
| Mitsubishi Heavy Industries, Ltd. | 8657 |
13 |
| The Boeing Company | 20025 |
10 |
| Safran Aircraft Engines | 6250 |
8 |
| Chuo Hatsujo Kabushiki Kaisha | 128 |
7 |
| Fuji Kihan Co., Ltd. | 25 |
7 |
| NTN Corporation | 4977 |
6 |
| Jiangsu University | 1093 |
6 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2874 |
6 |
| Sumitomo Metal Industries, Ltd. | 386 |
6 |
| Rtx Corporation | 9313 |
6 |
| Honda Motor Co., Ltd. | 25157 |
5 |
| Toyota Motor Corporation | 31565 |
5 |
| JFE Steel Corporation | 6794 |
5 |
| GE Infrastructure Technology, LLC | 6196 |
5 |
| Nippon Steel SG Wire Co., Ltd. | 14 |
5 |
| Siemens AG | 24547 |
4 |
| SAFRAN S.A. | 606 |
4 |
| Other owners | 260 |