- 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 1/68 - Temporary coatings or embedding materials applied before or during heat treatment
Patent holdings for IPC class C21D 1/68
Total number of patents in this class: 63
10-year publication summary
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2
|
4
|
6
|
4
|
4
|
2
|
3
|
3
|
0
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| POSCO | 2188 |
8 |
| POSCO Co., Ltd. | 1558 |
6 |
| Salzgitter Flachstahl GmbH | 158 |
3 |
| Tata Steel Nederland Technology BV | 151 |
3 |
| Ford Global Technologies, LLC | 20505 |
2 |
| Henkel AG & Co. KGaA | 10525 |
2 |
| Baoshan Iron & Steel Co., Ltd. | 959 |
2 |
| JFE Steel Corporation | 6809 |
2 |
| MEC International Co., Ltd. | 15 |
2 |
| Nippon Steel Corporation | 6203 |
2 |
| Tata Steel UK Limited | 163 |
2 |
| Toyota School Foundation | 62 |
2 |
| Voestalpine Stahl GmbH | 354 |
2 |
| Dalian RINO Environment Engineering Science and Technology Co., Ltd. | 3 |
2 |
| Toyota Motor Corporation | 31764 |
1 |
| Hitachi Metals, Ltd. | 1985 |
1 |
| GM Global Technology Operations LLC | 14937 |
1 |
| ALCAN Rhenalu | 19 |
1 |
| ArcelorMittal | 2271 |
1 |
| ArcelorMittal France | 86 |
1 |
| Other owners | 17 |