- 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 1/54 - Determining when the hardening temperature has been reached by measurement of magnetic or electrical properties
Patent holdings for IPC class C21D 1/54
Total number of patents in this class: 10
10-year publication summary
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1
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2
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1
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0
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0
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0
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1
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0
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0
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0
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Primetals Technologies Austria GmbH | 531 |
2 |
| Apple Inc. | 54714 |
1 |
| SAFRAN S.A. | 614 |
1 |
| Tokyo Electron Limited | 12681 |
1 |
| Kaohsiung Medical University | 139 |
1 |
| Muhr und Bender KG | 88 |
1 |
| Arconic Inc. | 245 |
1 |
| United States Government Administrator of NASA | 29 |
1 |
| Arconic Technologies LLC | 334 |
1 |
| Other owners | 0 |