- 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: 2076
10-year publication summary
|
174
|
204
|
227
|
249
|
220
|
224
|
247
|
222
|
172
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 5982 |
289 |
| JFE Steel Corporation | 6527 |
250 |
| ArcelorMittal | 2047 |
135 |
| POSCO Co., Ltd. | 1290 |
125 |
| POSCO | 2204 |
99 |
| True Velocity IP Holdings, Inc. | 237 |
57 |
| NIPPON STEEL Stainless Steel Corporation | 280 |
55 |
| Baoshan Iron & Steel Co., Ltd. | 888 |
49 |
| Nanjing Iron&Steel Co.,Ltd. | 153 |
32 |
| Daido Steel Co., Ltd. | 258 |
27 |
| ThyssenKrupp Steel Europe AG | 953 |
21 |
| Hitachi Metals, Ltd. | 2026 |
18 |
| Hyundai Motor Company | 20356 |
16 |
| Outokumpu Oyj | 251 |
16 |
| Jiangyin Xingcheng Special Steel Works Co., Ltd. | 62 |
14 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2906 |
14 |
| ThyssenKrupp AG | 3207 |
13 |
| Voestalpine Stahl GmbH | 340 |
13 |
| CRS Holdings, LLC | 157 |
13 |
| Hyundai Steel Company | 348 |
12 |
| Other owners | 808 |