- 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: 3963
10-year publication summary
|
297
|
309
|
309
|
268
|
248
|
248
|
252
|
253
|
275
|
172
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 7527 |
739 |
| Nippon Steel Corporation | 6871 |
673 |
| Nippon Steel & Sumitomo Metal Corporation | 1981 |
293 |
| POSCO Co., Ltd. | 2012 |
236 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2836 |
158 |
| POSCO | 2143 |
154 |
| ArcelorMittal | 2672 |
141 |
| NIPPON STEEL Stainless Steel Corporation | 277 |
92 |
| Baoshan Iron & Steel Co., Ltd. | 1102 |
72 |
| Nippon Steel & Sumikin Stainless Steel Corporation | 157 |
60 |
| True Velocity IP Holdings, Inc. | 249 |
57 |
| Sumitomo Metal Industries, Ltd. | 316 |
44 |
| Nisshin Steel Co., Ltd. | 382 |
40 |
| Outokumpu Oyj | 265 |
39 |
| Hyundai Steel Company | 531 |
31 |
| Nanjing Iron&Steel Co.,Ltd. | 186 |
27 |
| ATI Properties LLC | 200 |
22 |
| Voestalpine Stahl GmbH | 388 |
21 |
| Salzgitter Flachstahl GmbH | 163 |
20 |
| Daido Steel Co., Ltd. | 284 |
19 |
| Other owners | 1025 |