- 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 9/24 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for saw blades
Patent holdings for IPC class C21D 9/24
Total number of patents in this class: 15
10-year publication summary
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1
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2
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2
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3
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2
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3
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0
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0
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0
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0
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hitachi Metals, Ltd. | 1901 |
3 |
| Husqvarna AB | 3019 |
2 |
| Deere & Company | 8072 |
1 |
| B & J Rocket Sales AG | 32 |
1 |
| Groz-Beckert KG | 367 |
1 |
| Liebherr-components Biberach GmbH | 225 |
1 |
| Nippon Steel Corporation | 6839 |
1 |
| voestalpine Precision Strip GmbH | 23 |
1 |
| Wikus Saegenfabrik Wilhelm H. Kullmann GmbH & Co. KG | 10 |
1 |
| Liberty Performance Steels Limited | 4 |
1 |
| Qsgs Technology Grażyna Klepuszewska | 1 |
1 |
| Oregon Tool, Inc. | 282 |
1 |
| Other owners | 0 |