- All sections
- C - Chemistry; metallurgy
- 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: 3426
10-year publication summary
|
250
|
294
|
297
|
309
|
309
|
264
|
248
|
247
|
240
|
61
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6067 |
662 |
| Nippon Steel Corporation | 5649 |
556 |
| Nippon Steel & Sumitomo Metal Corporation | 1990 |
293 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2865 |
161 |
| POSCO | 2222 |
151 |
| ArcelorMittal | 1887 |
101 |
| POSCO Co., Ltd. | 1059 |
101 |
| NIPPON STEEL Stainless Steel Corporation | 254 |
76 |
| Sumitomo Metal Industries, Ltd. | 453 |
75 |
| Nippon Steel & Sumikin Stainless Steel Corporation | 171 |
64 |
| True Velocity IP Holdings, LLC | 255 |
57 |
| Baoshan Iron & Steel Co., Ltd. | 832 |
48 |
| Outokumpu Oyj | 250 |
41 |
| Nisshin Steel Co., Ltd. | 401 |
40 |
| ATI Properties LLC | 202 |
22 |
| Nanjing Iron&Steel Co.,Ltd. | 135 |
22 |
| Hitachi Metals, Ltd. | 2175 |
21 |
| Sandvik Intellectual Property AB | 1634 |
19 |
| Voestalpine Stahl GmbH | 311 |
19 |
| Salzgitter Flachstahl GmbH | 155 |
18 |
| Other owners | 879 |