- All sections
- C - Chemistrymetallurgy
- 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: 169
10-year publication summary
|
6
|
5
|
11
|
15
|
9
|
12
|
21
|
29
|
20
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| JFE Steel Corporation | 6809 |
53 |
| POSCO | 2188 |
12 |
| Paul Wurth S.A. | 418 |
10 |
| Wadeco Co., Ltd. | 19 |
9 |
| Tata Steel Limited | 175 |
6 |
| ArcelorMittal | 2271 |
5 |
| Wisdri Engineering & Research Incorporation Limited | 204 |
5 |
| Hybrit Development AB | 59 |
4 |
| Heraeus Electro-Nite International N.V. | 202 |
3 |
| Nippon Steel Engineering Co., Ltd. | 205 |
3 |
| Zhejiang University | 3122 |
3 |
| International Business Machines Corporation | 61185 |
2 |
| Centre de Recherches Metallurgiques ASBL - Centrum voor Research in de Metallurgie VZW | 42 |
2 |
| Nippon Steel Corporation | 6203 |
2 |
| Pan Pacific Copper Co., Ltd. | 31 |
2 |
| PaneraTech, Inc. | 33 |
2 |
| Primetals Technologies Austria GmbH | 530 |
2 |
| Tata Steel Ijmuiden B.V. | 305 |
2 |
| TMT - Tapping Measuring Technology SARL | 35 |
2 |
| Institute of Research of Iron and Steel, Jiangsu Province/sha-steel, Co. Ltd | 64 |
2 |
| Other owners | 38 |