- 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 5/02 - Heat treatment of cast-iron improving the malleability of grey cast-iron
Patent holdings for IPC class C21D 5/02
Total number of patents in this class: 11
10-year publication summary
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2
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1
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1
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0
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0
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0
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0
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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
|
|---|---|---|
| Caterpillar Inc. | 9548 |
2 |
| Tenneco Inc | 280 |
2 |
| Wilmington Trust, National Association, AS Co-collateral Trustee, Successor Collateral Trustee | 256 |
2 |
| Federal-Mogul Corporation | 310 |
1 |
| Ferropem | 13 |
1 |
| ThyssenKrupp Steel Europe AG | 955 |
1 |
| Wartsila Finland Oy | 741 |
1 |
| Zanardi Fonderie S.p.A. | 7 |
1 |
| Other owners | 0 |