- 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 5/14 - Graphitising
Patent holdings for IPC class C21D 5/14
Total number of patents in this class: 18
10-year publication summary
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0
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1
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1
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4
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1
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3
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1
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1
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4
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0
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| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi Metals, Ltd. | 2175 |
7 |
| POSCO Co., Ltd. | 1059 |
3 |
| Proterial, Ltd. | 638 |
2 |
| Fundacion Tecnalia Research & Innovation | 205 |
1 |
| Saint-Gobain Pam | 102 |
1 |
| Shandong University of Technology | 113 |
1 |
| GE Infrastructure Technology, LLC | 5873 |
1 |
| ISHIKAWALITE industry CO.,LTD | 6 |
1 |
| Tianrun Industry Technology Co., Ltd. | 5 |
1 |
| Other owners | 0 |