- All sections
- C - Chemistrymetallurgy
- C22C - Alloys
- C22C 38/58 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
Patent holdings for IPC class C22C 38/58
Total number of patents in this class: 3910
10-year publication summary
|
297
|
309
|
309
|
268
|
248
|
248
|
252
|
253
|
274
|
105
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 7407 |
738 |
| Nippon Steel Corporation | 6751 |
660 |
| Nippon Steel & Sumitomo Metal Corporation | 1982 |
293 |
| POSCO Co., Ltd. | 1687 |
203 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2833 |
160 |
| POSCO | 2153 |
154 |
| ArcelorMittal | 2572 |
138 |
| NIPPON STEEL Stainless Steel Corporation | 278 |
93 |
| Baoshan Iron & Steel Co., Ltd. | 1091 |
69 |
| Nippon Steel & Sumikin Stainless Steel Corporation | 161 |
62 |
| True Velocity IP Holdings, Inc. | 249 |
57 |
| Sumitomo Metal Industries, Ltd. | 322 |
46 |
| Nisshin Steel Co., Ltd. | 389 |
40 |
| Outokumpu Oyj | 260 |
39 |
| Hyundai Steel Company | 508 |
28 |
| Nanjing Iron&Steel Co.,Ltd. | 184 |
26 |
| ATI Properties LLC | 199 |
22 |
| Salzgitter Flachstahl GmbH | 163 |
20 |
| Voestalpine Stahl GmbH | 384 |
20 |
| Daido Steel Co., Ltd. | 281 |
19 |
| Other owners | 1023 |