- All sections
- C - Chemistry; metallurgy
- 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: 2892
10-year publication summary
|
177
|
218
|
199
|
262
|
286
|
310
|
241
|
322
|
317
|
94
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6067 |
1247 |
| Nippon Steel Corporation | 5649 |
648 |
| Nippon Steel & Sumitomo Metal Corporation | 1990 |
190 |
| POSCO | 2222 |
102 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2865 |
93 |
| POSCO Co., Ltd. | 1059 |
77 |
| NIPPON STEEL Stainless Steel Corporation | 254 |
68 |
| Hitachi Metals, Ltd. | 2175 |
38 |
| Nippon Steel & Sumikin Stainless Steel Corporation | 171 |
36 |
| Daido Steel Co., Ltd. | 237 |
24 |
| Baoshan Iron & Steel Co., Ltd. | 832 |
20 |
| ArcelorMittal | 1887 |
17 |
| Sumitomo Metal Industries, Ltd. | 453 |
15 |
| Honda Motor Co., Ltd. | 24537 |
10 |
| Hyundai Steel Company | 310 |
10 |
| NHK Spring Co., Ltd. | 1657 |
10 |
| Aichi Steel Corporation | 333 |
9 |
| ThyssenKrupp Steel Europe AG | 924 |
9 |
| Toyota Motor Corporation | 28582 |
7 |
| Aisin AW Co., Ltd. | 2430 |
6 |
| Other owners | 256 |