- All sections
- C - Chemistry; metallurgy
- C22C - Alloys
- C22C 38/42 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
Patent holdings for IPC class C22C 38/42
Total number of patents in this class: 2034
10-year publication summary
191
|
200
|
218
|
229
|
263
|
230
|
210
|
251
|
219
|
66
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Nippon Steel Corporation | 5649 |
301 |
JFE Steel Corporation | 6067 |
251 |
POSCO | 2222 |
114 |
POSCO Co., Ltd. | 1059 |
100 |
ArcelorMittal | 1887 |
69 |
NIPPON STEEL Stainless Steel Corporation | 254 |
62 |
True Velocity IP Holdings, LLC | 255 |
57 |
Outokumpu Oyj | 250 |
37 |
Baoshan Iron & Steel Co., Ltd. | 832 |
34 |
Daido Steel Co., Ltd. | 237 |
28 |
Nanjing Iron&Steel Co.,Ltd. | 135 |
22 |
ATI Properties LLC | 202 |
20 |
Kobe Steel, Ltd. | 912 |
20 |
ThyssenKrupp Steel Europe AG | 924 |
20 |
Sandvik Intellectual Property AB | 1634 |
18 |
Jiangyin Xingcheng Special Steel Works Co., Ltd. | 58 |
17 |
Nippon Steel & Sumikin Stainless Steel Corporation | 171 |
16 |
Hyundai Steel Company | 310 |
15 |
ThyssenKrupp AG | 3086 |
15 |
CRS Holdings, LLC | 156 |
15 |
Other owners | 803 |