- All sections
- C - Chemistrymetallurgy
- 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: 2640
10-year publication summary
|
218
|
229
|
265
|
229
|
211
|
255
|
235
|
209
|
233
|
221
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 7098 |
375 |
| JFE Steel Corporation | 7675 |
300 |
| POSCO Co., Ltd. | 2032 |
227 |
| ArcelorMittal | 2754 |
146 |
| POSCO | 2144 |
113 |
| NIPPON STEEL Stainless Steel Corporation | 275 |
69 |
| Baoshan Iron & Steel Co., Ltd. | 1136 |
60 |
| True Velocity IP Holdings, Inc. | 252 |
57 |
| Daido Steel Co., Ltd. | 289 |
45 |
| Hyundai Steel Company | 550 |
41 |
| Outokumpu Oyj | 276 |
37 |
| Nanjing Iron&Steel Co.,Ltd. | 190 |
29 |
| ThyssenKrupp Steel Europe AG | 997 |
25 |
| Kobe Steel, Ltd. | 901 |
21 |
| ATI Properties LLC | 202 |
20 |
| Jiangsu Shagang Group Co., Ltd. | 117 |
20 |
| Jiangyin Xingcheng Special Steel Works Co., Ltd. | 64 |
18 |
| Institute of Research of Iron and Steel, Jiangsu Province/sha-steel, Co. Ltd | 83 |
17 |
| voestalpine Böhler Edelstahl GmbH & Co KG | 66 |
16 |
| Nippon Steel & Sumikin Stainless Steel Corporation | 155 |
15 |
| Other owners | 989 |