- All sections
- C - Chemistry; metallurgy
- C22C - Alloys
- C22C 38/48 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
Patent holdings for IPC class C22C 38/48
Total number of patents in this class: 1958
10-year publication summary
159
|
174
|
204
|
227
|
249
|
220
|
223
|
246
|
214
|
52
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Nippon Steel Corporation | 5649 |
270 |
JFE Steel Corporation | 6067 |
242 |
ArcelorMittal | 1887 |
122 |
POSCO Co., Ltd. | 1059 |
107 |
POSCO | 2222 |
98 |
True Velocity IP Holdings, LLC | 255 |
57 |
NIPPON STEEL Stainless Steel Corporation | 254 |
55 |
Baoshan Iron & Steel Co., Ltd. | 832 |
44 |
Nanjing Iron&Steel Co.,Ltd. | 135 |
28 |
Daido Steel Co., Ltd. | 237 |
24 |
ThyssenKrupp Steel Europe AG | 924 |
19 |
Hitachi Metals, Ltd. | 2175 |
18 |
Hyundai Motor Company | 19021 |
17 |
Outokumpu Oyj | 250 |
16 |
Jiangyin Xingcheng Special Steel Works Co., Ltd. | 58 |
13 |
Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2865 |
13 |
ThyssenKrupp AG | 3086 |
13 |
Voestalpine Stahl GmbH | 311 |
13 |
Jiangsu Shagang Group Co., Ltd. | 52 |
12 |
ATI Properties LLC | 202 |
11 |
Other owners | 766 |