- All sections
- C - Chemistrymetallurgy
- C22C - Alloys
- C22C 38/60 - Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium or antimony, or more than 0.04% by weight of sulfur
Patent holdings for IPC class C22C 38/60
Total number of patents in this class: 3279
10-year publication summary
|
218
|
199
|
263
|
286
|
310
|
241
|
325
|
326
|
382
|
125
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6730 |
1411 |
| Nippon Steel Corporation | 6139 |
814 |
| Nippon Steel & Sumitomo Metal Corporation | 1987 |
190 |
| POSCO | 2188 |
101 |
| POSCO Co., Ltd. | 1381 |
99 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2866 |
98 |
| NIPPON STEEL Stainless Steel Corporation | 290 |
82 |
| Hitachi Metals, Ltd. | 1990 |
38 |
| Nippon Steel & Sumikin Stainless Steel Corporation | 168 |
36 |
| Daido Steel Co., Ltd. | 262 |
26 |
| ArcelorMittal | 2197 |
23 |
| Baoshan Iron & Steel Co., Ltd. | 950 |
23 |
| Sumitomo Metal Industries, Ltd. | 388 |
13 |
| Aichi Steel Corporation | 376 |
12 |
| Hyundai Steel Company | 389 |
11 |
| Honda Motor Co., Ltd. | 25116 |
10 |
| NHK Spring Co., Ltd. | 1812 |
10 |
| ThyssenKrupp Steel Europe AG | 950 |
9 |
| Proterial, Ltd. | 817 |
7 |
| Toyota Motor Corporation | 31311 |
6 |
| Other owners | 260 |