- 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: 3397
10-year publication summary
|
214
|
194
|
248
|
270
|
302
|
234
|
311
|
313
|
380
|
238
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6892 |
1454 |
| Nippon Steel Corporation | 6321 |
871 |
| Nippon Steel & Sumitomo Metal Corporation | 1987 |
190 |
| POSCO Co., Ltd. | 1571 |
103 |
| POSCO | 2184 |
101 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2875 |
99 |
| NIPPON STEEL Stainless Steel Corporation | 286 |
83 |
| Hitachi Metals, Ltd. | 1976 |
38 |
| Nippon Steel & Sumikin Stainless Steel Corporation | 166 |
36 |
| Daido Steel Co., Ltd. | 271 |
27 |
| ArcelorMittal | 2317 |
25 |
| Baoshan Iron & Steel Co., Ltd. | 966 |
23 |
| Aichi Steel Corporation | 383 |
12 |
| Hyundai Steel Company | 431 |
12 |
| Sumitomo Metal Industries, Ltd. | 369 |
12 |
| Honda Motor Co., Ltd. | 25379 |
10 |
| NHK Spring Co., Ltd. | 1874 |
10 |
| ThyssenKrupp Steel Europe AG | 958 |
9 |
| Proterial, Ltd. | 860 |
8 |
| Toyota Motor Corporation | 32681 |
6 |
| Other owners | 268 |