- All sections
- C - Chemistry; metallurgy
- C21D - Modifying the physical structure of ferrous metals; general devices for heat treatment of ferrous or non-ferrous metals or alloys; making metal malleable, e.g. by decarburisation or tempering
- C21D 9/64 - Patenting furnaces
Patent holdings for IPC class C21D 9/64
Total number of patents in this class: 13
10-year publication summary
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0
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1
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1
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0
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1
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2
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0
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0
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1
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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
|
|---|---|---|
| ArcelorMittal Wire France | 41 |
2 |
| National University Corporation Kumamoto University | 385 |
2 |
| Nippon Steel Corporation | 6012 |
1 |
| Nippon Steel & Sumitomo Metal Corporation | 1988 |
1 |
| NV Bekaert SA | 758 |
1 |
| Pirelli Tyre S.p.A. | 1870 |
1 |
| ThyssenKrupp Steel AG | 64 |
1 |
| Tokyo Rope Manufacturing Co., Ltd. | 48 |
1 |
| Tokyo Rope Mfg. Co., Ltd. | 63 |
1 |
| Bührer Traktorenfabrik AG | 3 |
1 |
| Fib Belgium | 2 |
1 |
| Other owners | 0 |