- 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 3/02 - Extraction of non-metals
Patent holdings for IPC class C21D 3/02
Total number of patents in this class: 10
10-year publication summary
|
1
|
0
|
0
|
2
|
0
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2
|
1
|
0
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0
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| ATI Properties, Inc. | 83 |
2 |
| JFE Steel Corporation | 7339 |
2 |
| National Chain Company | 51 |
2 |
| Areva NP | 202 |
1 |
| ATI Properties LLC | 201 |
1 |
| Ningxia Orient Tantalum Industry Co., Ltd. | 55 |
1 |
| Wuhan Iron and Steel Company Limited | 34 |
1 |
| Other owners | 0 |