- All sections
- C - Chemistry; metallurgy
- C21D - Modifying the physical structure of ferrous metals; general devices for heat treatment of ferrous or non-ferrous metals or alloys; making metal malleable, e.g. by decarburisation or tempering
- C21D 1/44 - Methods of heating in heat-treatment baths
Patent holdings for IPC class C21D 1/44
Total number of patents in this class: 3
10-year publication summary
|
0
|
1
|
0
|
0
|
1
|
0
|
1
|
0
|
0
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sumitomo Electric Industries, Ltd. | 14131 |
1 |
| Varel International Ind., L.P. | 73 |
1 |
| Bührer Traktorenfabrik AG | 3 |
1 |
| Other owners | 0 |