- 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 9/12 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for tubular bodies or pipes barrels for ordnance
Patent holdings for IPC class C21D 9/12
Total number of patents in this class: 5
10-year publication summary
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rheinmetall Waffe Munition GmbH | 557 |
2 |
| Robert Bosch GmbH | 42614 |
1 |
| Gunwright Intellectual Property LLC | 5 |
1 |
| Rcbs Precisioneered Reloading, LLC | 33 |
1 |
| Other owners | 0 |