- 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 9/68 - Furnace coilersHot coilers
Patent holdings for IPC class C21D 9/68
Total number of patents in this class: 38
10-year publication summary
|
1
|
6
|
3
|
0
|
13
|
0
|
1
|
1
|
2
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| POSCO | 2143 |
13 |
| Siemens VAI Metals Technologies GmbH | 204 |
3 |
| Danieli & C. Officine Meccaniche S.p.A. | 720 |
3 |
| JFE Steel Corporation | 7527 |
3 |
| Pyrogenesis Canada, Inc. | 66 |
2 |
| Hyundai Motor Company | 24653 |
1 |
| Kia Motors Corporation | 7718 |
1 |
| Baoshan Iron & Steel Co., Ltd. | 1102 |
1 |
| Fives Stein | 108 |
1 |
| Gautschi Engineering GmbH | 12 |
1 |
| Kubota Corporation | 4391 |
1 |
| POSCO Co., Ltd. | 2012 |
1 |
| SMS Demag AG | 32 |
1 |
| Superba S.A.S. | 10 |
1 |
| C.O.P.S. International GmbH | 1 |
1 |
| Danieli Corporation | 14 |
1 |
| Yan Tai Devolopment Zone Blue Whale Maintenance Welding Co., Ltd. | 1 |
1 |
| Fives Stein | 4 |
1 |
| Rtx Corporation | 10102 |
1 |
| Other owners | 0 |