- All sections
- C - Chemistry; metallurgy
- C21B - Manufacture of iron or steel
- C21B 7/24 - Test rods or other checking devices
Patent holdings for IPC class C21B 7/24
Total number of patents in this class: 166
10-year publication summary
|
6
|
5
|
11
|
15
|
9
|
12
|
21
|
28
|
19
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6557 |
53 |
| POSCO | 2204 |
12 |
| Paul Wurth S.A. | 410 |
10 |
| Wadeco Co., Ltd. | 18 |
9 |
| Tata Steel Limited | 190 |
7 |
| ArcelorMittal | 2064 |
5 |
| Wisdri Engineering & Research Incorporation Limited | 180 |
5 |
| Heraeus Electro-Nite International N.V. | 205 |
3 |
| Nippon Steel Engineering Co., Ltd. | 219 |
3 |
| Zhejiang University | 2950 |
3 |
| Hybrit Development AB | 49 |
3 |
| International Business Machines Corporation | 60129 |
2 |
| Centre de Recherches Metallurgiques ASBL - Centrum voor Research in de Metallurgie VZW | 44 |
2 |
| Nippon Steel Corporation | 6012 |
2 |
| Pan Pacific Copper Co., Ltd. | 31 |
2 |
| Primetals Technologies Austria GmbH | 512 |
2 |
| Tata Steel Ijmuiden B.V. | 300 |
2 |
| TMT - Tapping Measuring Technology SARL | 34 |
2 |
| Excello Co., Ltd. | 12 |
2 |
| Honda Motor Co., Ltd. | 24866 |
1 |
| Other owners | 36 |