- All sections
- C - Chemistry; metallurgy
- C22C - Alloys
- C22C 38/14 - Ferrous alloys, e.g. steel alloys containing titanium or zirconium
Patent holdings for IPC class C22C 38/14
Total number of patents in this class: 2738
10-year publication summary
|
237
|
273
|
276
|
254
|
257
|
270
|
202
|
229
|
242
|
86
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6067 |
712 |
| Nippon Steel Corporation | 5649 |
444 |
| ArcelorMittal | 1887 |
164 |
| Baoshan Iron & Steel Co., Ltd. | 832 |
151 |
| POSCO | 2222 |
150 |
| POSCO Co., Ltd. | 1059 |
139 |
| Nippon Steel & Sumitomo Metal Corporation | 1990 |
97 |
| ThyssenKrupp Steel Europe AG | 924 |
64 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2865 |
59 |
| TDK Corporation | 6306 |
44 |
| Tata Steel Ijmuiden B.V. | 283 |
31 |
| ThyssenKrupp AG | 3086 |
31 |
| Kobe Steel, Ltd. | 912 |
24 |
| Hyundai Steel Company | 310 |
22 |
| Voestalpine Stahl GmbH | 311 |
22 |
| Nisshin Steel Co., Ltd. | 401 |
19 |
| Salzgitter Flachstahl GmbH | 155 |
18 |
| Hitachi Metals, Ltd. | 2175 |
16 |
| ArcelorMittal Investigacion y Desarrollo SL | 209 |
15 |
| ArcelorMittal France | 102 |
12 |
| Other owners | 504 |