- 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 5/14 - Graphitising
Patent holdings for IPC class C21D 5/14
Total number of patents in this class: 20
10-year publication summary
|
1
|
1
|
4
|
1
|
3
|
1
|
1
|
4
|
0
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi Metals, Ltd. | 1983 |
5 |
| POSCO Co., Ltd. | 1562 |
4 |
| Proterial, Ltd. | 840 |
3 |
| Kuwana Metals, Ltd. | 27 |
2 |
| Fundacion Tecnalia Research & Innovation | 217 |
1 |
| Saint-Gobain Pam | 73 |
1 |
| Shandong University of Technology | 118 |
1 |
| GE Infrastructure Technology, LLC | 6213 |
1 |
| ISHIKAWALITE industry CO.,LTD | 10 |
1 |
| Tianrun Industry Technology Co., Ltd. | 6 |
1 |
| Other owners | 0 |