- All sections
- C - Chemistrymetallurgy
- C22C - Alloys
- C22C 38/32 - Ferrous alloys, e.g. steel alloys containing chromium with boron
Patent holdings for IPC class C22C 38/32
Total number of patents in this class: 1885
10-year publication summary
|
158
|
159
|
160
|
180
|
177
|
115
|
155
|
177
|
187
|
119
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 6365 |
258 |
| JFE Steel Corporation | 6965 |
256 |
| ArcelorMittal | 2328 |
202 |
| POSCO Co., Ltd. | 1574 |
186 |
| Baoshan Iron & Steel Co., Ltd. | 968 |
76 |
| POSCO | 2181 |
70 |
| ThyssenKrupp Steel Europe AG | 958 |
59 |
| Hyundai Steel Company | 441 |
54 |
| Nippon Steel & Sumitomo Metal Corporation | 1987 |
39 |
| Voestalpine Stahl GmbH | 363 |
27 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2879 |
23 |
| Salzgitter Flachstahl GmbH | 159 |
21 |
| ThyssenKrupp AG | 3311 |
20 |
| NIPPON STEEL Stainless Steel Corporation | 282 |
20 |
| Kobe Steel, Ltd. | 882 |
19 |
| Nippon Steel & Sumikin Stainless Steel Corporation | 166 |
18 |
| Tata Steel Ijmuiden B.V. | 311 |
16 |
| ArcelorMittal France | 93 |
13 |
| Oerlikon Metco (US) Inc. | 206 |
11 |
| Tata Steel Nederland Technology BV | 151 |
11 |
| Other owners | 486 |