- All sections
- C - Chemistry; metallurgy
- C22C - Alloys
- C22C 38/02 - Ferrous alloys, e.g. steel alloys containing silicon
Patent holdings for IPC class C22C 38/02
Total number of patents in this class: 7335
10-year publication summary
642
|
705
|
769
|
802
|
836
|
806
|
700
|
900
|
824
|
275
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Nippon Steel Corporation | 5649 |
959 |
JFE Steel Corporation | 6067 |
913 |
ArcelorMittal | 1887 |
565 |
POSCO | 2222 |
522 |
POSCO Co., Ltd. | 1059 |
472 |
Baoshan Iron & Steel Co., Ltd. | 832 |
288 |
ThyssenKrupp Steel Europe AG | 924 |
151 |
NIPPON STEEL Stainless Steel Corporation | 254 |
87 |
ThyssenKrupp AG | 3086 |
82 |
Nanjing Iron&Steel Co.,Ltd. | 135 |
80 |
Hyundai Steel Company | 310 |
76 |
Salzgitter Flachstahl GmbH | 155 |
66 |
Tata Steel Ijmuiden B.V. | 283 |
64 |
Voestalpine Stahl GmbH | 311 |
59 |
Kobe Steel, Ltd. | 912 |
58 |
True Velocity IP Holdings, LLC | 255 |
57 |
Hitachi Metals, Ltd. | 2175 |
47 |
Hyundai Motor Company | 19021 |
42 |
Daido Steel Co., Ltd. | 237 |
42 |
Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2865 |
42 |
Other owners | 2663 |