- 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: 435
10-year publication summary
|
42
|
36
|
27
|
35
|
26
|
30
|
26
|
30
|
14
|
4
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NHK Spring Co., Ltd. | 1657 |
34 |
| Nippon Steel Corporation | 5649 |
28 |
| Sintokogio, Ltd. | 1148 |
23 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
14 |
| The Boeing Company | 19843 |
9 |
| Safran Aircraft Engines | 5739 |
8 |
| Chuo Hatsujo Kabushiki Kaisha | 124 |
7 |
| NTN Corporation | 5008 |
6 |
| Jiangsu University | 950 |
6 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2865 |
6 |
| MTU Aero Engines GmbH | 565 |
6 |
| Sumitomo Metal Industries, Ltd. | 453 |
6 |
| Rtx Corporation | 8674 |
6 |
| Toyota Motor Corporation | 28582 |
5 |
| Fuji Kihan Co., Ltd. | 25 |
5 |
| JFE Steel Corporation | 6067 |
5 |
| GE Infrastructure Technology, LLC | 5873 |
5 |
| Nippon Steel SG Wire Co., Ltd. | 13 |
5 |
| Honda Motor Co., Ltd. | 24537 |
4 |
| Siemens AG | 24990 |
4 |
| Other owners | 243 |