- All sections
- C - Chemistrymetallurgy
- C21D - Modifying the physical structure of ferrous metalsgeneral devices for heat treatment of ferrous or non-ferrous metals or alloysmaking metal malleable, e.g. by decarburisation or tempering
- C21D 9/70 - Furnaces for ingots, i.e. soaking pits
Patent holdings for IPC class C21D 9/70
Total number of patents in this class: 18
10-year publication summary
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1
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0
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1
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0
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3
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3
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1
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0
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0
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0
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Linde Aktiengesellschaft | 1516 |
2 |
| Nippon Steel Corporation | 6207 |
2 |
| SNECMA S.A. | 1147 |
1 |
| Baoshan Iron & Steel Co., Ltd. | 959 |
1 |
| Norsk Hydro ASA | 260 |
1 |
| QuesTek Innovations LLC | 61 |
1 |
| Terrapower, LLC | 331 |
1 |
| Gerdau Investigación y Desarrollo Europa, S.A. | 2 |
1 |
| FORONI S.p.A. | 21 |
1 |
| Snecma | 1064 |
1 |
| Baosteel Zhanjiang Iron & Steel Co., Ltd. | 11 |
1 |
| Ceri Phoenix Industrial Furnace Co., Ltd. | 4 |
1 |
| Laiwu Steel Group, Ltd. | 3 |
1 |
| MCC Capital Engineering & Research Incorporation Limited | 12 |
1 |
| Fushun Special Steel Shares Co., Ltd. | 3 |
1 |
| Gaona Aero Material Co., Ltd. | 20 |
1 |
| Other owners | 0 |