- All sections
- C - Chemistrymetallurgy
- C22C - Alloys
- C22C 38/50 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
Patent holdings for IPC class C22C 38/50
Total number of patents in this class: 2603
10-year publication summary
|
226
|
239
|
228
|
231
|
216
|
257
|
225
|
195
|
206
|
157
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 6895 |
380 |
| JFE Steel Corporation | 7549 |
351 |
| ArcelorMittal | 2680 |
210 |
| POSCO Co., Ltd. | 2015 |
205 |
| Baoshan Iron & Steel Co., Ltd. | 1104 |
95 |
| POSCO | 2142 |
93 |
| NIPPON STEEL Stainless Steel Corporation | 277 |
60 |
| Nanjing Iron&Steel Co.,Ltd. | 186 |
45 |
| Daido Steel Co., Ltd. | 284 |
31 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2836 |
31 |
| Hyundai Steel Company | 535 |
28 |
| ThyssenKrupp Steel Europe AG | 992 |
27 |
| Nippon Steel & Sumitomo Metal Corporation | 1981 |
25 |
| Jiangsu Shagang Group Co., Ltd. | 113 |
24 |
| Kobe Steel, Ltd. | 898 |
21 |
| Voestalpine Stahl GmbH | 388 |
19 |
| Hitachi Metals, Ltd. | 1896 |
18 |
| Jiangyin Xingcheng Special Steel Works Co., Ltd. | 64 |
18 |
| Nippon Steel & Sumikin Stainless Steel Corporation | 156 |
18 |
| Salzgitter Flachstahl GmbH | 163 |
16 |
| Other owners | 888 |