- All sections
- C - Chemistry; metallurgy
- 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: 1615
10-year publication summary
|
145
|
158
|
169
|
196
|
151
|
144
|
163
|
171
|
163
|
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 |
233 |
| JFE Steel Corporation | 6527 |
225 |
| POSCO Co., Ltd. | 1290 |
146 |
| ArcelorMittal | 2047 |
134 |
| POSCO | 2204 |
103 |
| Baoshan Iron & Steel Co., Ltd. | 888 |
85 |
| ThyssenKrupp Steel Europe AG | 953 |
41 |
| Hyundai Steel Company | 348 |
33 |
| Salzgitter Flachstahl GmbH | 156 |
24 |
| NIPPON STEEL Stainless Steel Corporation | 280 |
23 |
| Nippon Steel & Sumikin Stainless Steel Corporation | 169 |
18 |
| Tata Steel Ijmuiden B.V. | 300 |
18 |
| ThyssenKrupp AG | 3207 |
17 |
| Nisshin Steel Co., Ltd. | 398 |
11 |
| Voestalpine Stahl GmbH | 340 |
11 |
| Hitachi Metals, Ltd. | 2026 |
9 |
| Kobe Steel, Ltd. | 862 |
9 |
| Oerlikon Metco (US) Inc. | 210 |
9 |
| Kanthal AB | 108 |
9 |
| AK Steel Properties, Inc. | 75 |
8 |
| Other owners | 449 |