- All sections
- C - Chemistrymetallurgy
- C22C - Alloys
- C22C 38/30 - Ferrous alloys, e.g. steel alloys containing chromium with cobalt
Patent holdings for IPC class C22C 38/30
Total number of patents in this class: 280
10-year publication summary
|
33
|
24
|
29
|
26
|
24
|
27
|
20
|
19
|
27
|
6
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Steel Corporation | 6754 |
49 |
| JFE Steel Corporation | 7418 |
14 |
| NIPPON STEEL Stainless Steel Corporation | 278 |
10 |
| Aktiebolaget SKF | 3113 |
8 |
| Daido Steel Co., Ltd. | 281 |
8 |
| POSCO | 2152 |
8 |
| Nippon Steel & Sumikin Stainless Steel Corporation | 161 |
7 |
| POSCO Co., Ltd. | 1703 |
7 |
| Hitachi Metals, Ltd. | 1915 |
6 |
| TDK Corporation | 6833 |
6 |
| Salzgitter Flachstahl GmbH | 163 |
6 |
| Siemens AG | 24122 |
5 |
| Aperam | 135 |
5 |
| Uddeholms Aktiebolag | 203 |
5 |
| General Electric Company | 13823 |
4 |
| Advanced Technology & Materials Co., Ltd. | 33 |
4 |
| HeYe Special Steel Co. Ltd | 7 |
4 |
| HRL Laboratories, LLC | 1627 |
4 |
| Toshiba Corporation | 12688 |
3 |
| ATI Properties LLC | 199 |
3 |
| Other owners | 114 |