- 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: 3878
10-year publication summary
|
275
|
283
|
281
|
250
|
241
|
239
|
243
|
243
|
250
|
65
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 7308 |
733 |
| Nippon Steel Corporation | 6661 |
651 |
| Nippon Steel & Sumitomo Metal Corporation | 1985 |
293 |
| POSCO Co., Ltd. | 1653 |
201 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2832 |
161 |
| POSCO | 2155 |
153 |
| ArcelorMittal | 2522 |
135 |
| NIPPON STEEL Stainless Steel Corporation | 277 |
92 |
| Baoshan Iron & Steel Co., Ltd. | 1072 |
68 |
| Nippon Steel & Sumikin Stainless Steel Corporation | 163 |
62 |
| True Velocity IP Holdings, Inc. | 248 |
57 |
| Sumitomo Metal Industries, Ltd. | 333 |
50 |
| Nisshin Steel Co., Ltd. | 390 |
40 |
| Outokumpu Oyj | 262 |
39 |
| Hyundai Steel Company | 484 |
27 |
| Nanjing Iron&Steel Co.,Ltd. | 181 |
26 |
| ATI Properties LLC | 201 |
22 |
| Hitachi Metals, Ltd. | 1926 |
20 |
| Daido Steel Co., Ltd. | 280 |
19 |
| Salzgitter Flachstahl GmbH | 161 |
19 |
| Other owners | 1010 |