- All sections
- C - Chemistrymetallurgy
- C22C - Alloys
- C22C 38/26 - Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
Patent holdings for IPC class C22C 38/26
Total number of patents in this class: 1765
10-year publication summary
|
147
|
159
|
193
|
145
|
137
|
152
|
169
|
164
|
128
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 6544 |
247 |
| JFE Steel Corporation | 7111 |
235 |
| POSCO Co., Ltd. | 1604 |
178 |
| ArcelorMittal | 2427 |
157 |
| POSCO | 2154 |
104 |
| Baoshan Iron & Steel Co., Ltd. | 1028 |
98 |
| ThyssenKrupp Steel Europe AG | 964 |
44 |
| Hyundai Steel Company | 456 |
40 |
| Salzgitter Flachstahl GmbH | 160 |
27 |
| NIPPON STEEL Stainless Steel Corporation | 276 |
23 |
| Tata Steel Ijmuiden B.V. | 311 |
18 |
| ThyssenKrupp AG | 3370 |
18 |
| Nippon Steel & Sumikin Stainless Steel Corporation | 164 |
17 |
| Voestalpine Stahl GmbH | 372 |
12 |
| Nisshin Steel Co., Ltd. | 394 |
11 |
| Kanthal AB | 113 |
10 |
| Wuhan Iron and Steel Company Limited | 31 |
10 |
| Seiko Epson Corporation | 19734 |
9 |
| Hitachi Metals, Ltd. | 1952 |
9 |
| Daido Steel Co., Ltd. | 275 |
9 |
| Other owners | 489 |