- 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 8/06 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
Patent holdings for IPC class C21D 8/06
Total number of patents in this class: 834
10-year publication summary
|
67
|
78
|
90
|
77
|
34
|
64
|
72
|
84
|
55
|
16
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 5649 |
111 |
| Nippon Steel & Sumitomo Metal Corporation | 1990 |
94 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2865 |
69 |
| POSCO | 2222 |
54 |
| JFE Steel Corporation | 6067 |
28 |
| POSCO Co., Ltd. | 1059 |
26 |
| NV Bekaert SA | 750 |
18 |
| Sumitomo Electric Industries, Ltd. | 14131 |
16 |
| Baoshan Iron & Steel Co., Ltd. | 832 |
15 |
| NHK Spring Co., Ltd. | 1657 |
15 |
| ArcelorMittal | 1887 |
12 |
| NIPPON STEEL Stainless Steel Corporation | 254 |
12 |
| Hyundai Steel Company | 310 |
11 |
| Compagnie Generale des Etablissements Michelin | 4450 |
10 |
| Michelin Recherche et Technique S.A. | 2328 |
9 |
| Nippon Steel SG Wire Co., Ltd. | 13 |
8 |
| Honda Motor Co., Ltd. | 24537 |
7 |
| Aperam | 104 |
7 |
| ArcelorMittal Wire France | 40 |
7 |
| Jiangyin Xingcheng Special Steel Works Co., Ltd. | 58 |
7 |
| Other owners | 298 |