- All sections
- C - Chemistry; metallurgy
- C22C - Alloys
- C22C 38/08 - Ferrous alloys, e.g. steel alloys containing nickel
Patent holdings for IPC class C22C 38/08
Total number of patents in this class: 1452
10-year publication summary
|
151
|
158
|
169
|
184
|
176
|
167
|
122
|
102
|
104
|
34
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6067 |
283 |
| Nippon Steel Corporation | 5649 |
260 |
| POSCO | 2222 |
77 |
| ArcelorMittal | 1887 |
56 |
| POSCO Co., Ltd. | 1059 |
56 |
| Baoshan Iron & Steel Co., Ltd. | 832 |
38 |
| Aperam | 104 |
18 |
| Kobe Steel, Ltd. | 912 |
18 |
| United States Steel Corporation | 168 |
18 |
| ThyssenKrupp Steel Europe AG | 924 |
14 |
| Nanjing Iron&Steel Co.,Ltd. | 135 |
14 |
| TDK Corporation | 6306 |
13 |
| Höganäs AB | 337 |
12 |
| Hitachi Metals, Ltd. | 2175 |
11 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2865 |
10 |
| Denso Corporation | 23338 |
9 |
| Nisshin Steel Co., Ltd. | 401 |
9 |
| Dai Nippon Printing Co., Ltd. | 3891 |
8 |
| Salzgitter Flachstahl GmbH | 155 |
8 |
| ThyssenKrupp AG | 3086 |
8 |
| Other owners | 512 |