- 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 9/665 - Bell-type furnaces inverted or side-facing
Patent holdings for IPC class C21D 9/665
Total number of patents in this class: 3
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
|
|---|---|---|
| Baoshan Iron & Steel Co., Ltd. | 959 |
1 |
| Baosteel Zhanjiang Iron & Steel Co., Ltd. | 11 |
1 |
| Shanghai Heli Hydraulic Mechanical & Electrical Co., Ltd | 3 |
1 |
| Other owners | 0 |