- 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 9/16 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for explosive shells
Patent holdings for IPC class C21D 9/16
Total number of patents in this class: 13
10-year publication summary
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2
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2
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0
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1
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1
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0
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1
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0
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2
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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
|
|---|---|---|
| Greer Steel Company | 5 |
4 |
| The United States of America as represented by the Secretary of the Navy | 2744 |
2 |
| Giraud Tool Company, Inc. | 2 |
2 |
| Luvata Ohio, Inc. | 32 |
2 |
| Rheinmetall Waffe Munition GmbH | 557 |
1 |
| The University of North Carolina at Charlotte | 255 |
1 |
| Rcbs Precisioneered Reloading, LLC | 34 |
1 |
| Other owners | 0 |