- 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: 1504
10-year publication summary
|
157
|
145
|
158
|
168
|
196
|
151
|
144
|
163
|
165
|
46
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 5649 |
225 |
| JFE Steel Corporation | 6067 |
219 |
| ArcelorMittal | 1887 |
128 |
| POSCO Co., Ltd. | 1059 |
111 |
| POSCO | 2222 |
102 |
| Baoshan Iron & Steel Co., Ltd. | 832 |
74 |
| ThyssenKrupp Steel Europe AG | 924 |
39 |
| Hyundai Steel Company | 310 |
31 |
| Salzgitter Flachstahl GmbH | 155 |
22 |
| NIPPON STEEL Stainless Steel Corporation | 254 |
22 |
| Nippon Steel & Sumikin Stainless Steel Corporation | 171 |
18 |
| Tata Steel Ijmuiden B.V. | 283 |
18 |
| ThyssenKrupp AG | 3086 |
17 |
| Kobe Steel, Ltd. | 912 |
11 |
| Nisshin Steel Co., Ltd. | 401 |
11 |
| Hitachi Metals, Ltd. | 2175 |
10 |
| Oerlikon Metco (US) Inc. | 202 |
9 |
| AK Steel Properties, Inc. | 75 |
8 |
| Wuhan Iron and Steel Company Limited | 23 |
8 |
| Aktiebolaget SKF | 2700 |
7 |
| Other owners | 414 |