- All sections
- C - Chemistry; metallurgy
- 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: 1630
10-year publication summary
|
167
|
167
|
169
|
172
|
185
|
183
|
118
|
166
|
173
|
52
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6067 |
236 |
| Nippon Steel Corporation | 5649 |
225 |
| ArcelorMittal | 1887 |
154 |
| POSCO Co., Ltd. | 1059 |
125 |
| POSCO | 2222 |
70 |
| Baoshan Iron & Steel Co., Ltd. | 832 |
61 |
| ThyssenKrupp Steel Europe AG | 924 |
50 |
| Hyundai Steel Company | 310 |
41 |
| Nippon Steel & Sumitomo Metal Corporation | 1990 |
39 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2865 |
23 |
| Kobe Steel, Ltd. | 912 |
21 |
| ThyssenKrupp AG | 3086 |
21 |
| Salzgitter Flachstahl GmbH | 155 |
20 |
| NIPPON STEEL Stainless Steel Corporation | 254 |
20 |
| Nippon Steel & Sumikin Stainless Steel Corporation | 171 |
19 |
| Voestalpine Stahl GmbH | 311 |
19 |
| Tata Steel Ijmuiden B.V. | 283 |
16 |
| ArcelorMittal France | 102 |
14 |
| Oerlikon Metco (US) Inc. | 202 |
11 |
| Hyundai Motor Company | 19021 |
10 |
| Other owners | 435 |