- 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 8/08 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires for concrete reinforcement
Patent holdings for IPC class C21D 8/08
Total number of patents in this class: 45
10-year publication summary
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1
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3
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2
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1
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5
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4
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3
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4
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3
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2
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hyundai Steel Company | 426 |
4 |
| Allium Engineering, Inc. | 5 |
4 |
| JFE Steel Corporation | 6833 |
3 |
| Nippon Steel & Sumitomo Metal Corporation | 1988 |
3 |
| Northeastern University | 538 |
3 |
| Jiangsu Shagang Group Co., Ltd. | 90 |
3 |
| Wugang Group Kunming Iron and Steel Co., Ltd. | 3 |
3 |
| Sumitomo Electric Industries, Ltd. | 15455 |
2 |
| Danieli & C. Officine Meccaniche S.p.A. | 715 |
2 |
| Nippon Steel Corporation | 6231 |
2 |
| Sumitomo (SEI) Steel Wire Corp. | 43 |
2 |
| Eurolls S.p.A. | 11 |
2 |
| Zhangjiagang Hongchang Steel Plate Co., Ltd. | 12 |
2 |
| Institute of Research of Iron and Steel, Jiangsu Province/sha-steel, Co. Ltd | 64 |
2 |
| Institute of Research of Iron & Steel, Jiangsu Province/sha-steel, Co., Ltd. | 31 |
2 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2875 |
1 |
| Monkey Bar Couplers Pty Ltd | 1 |
1 |
| Outokumpu Oyj | 260 |
1 |
| POSCO Co., Ltd. | 1564 |
1 |
| Universitat Kassel | 87 |
1 |
| Other owners | 1 |