- All sections
- C - Chemistrymetallurgy
- C01F - Compounds of the metals beryllium, magnesium, aluminium, calcium, strontium, barium, radium, thorium, or of the rare earth metals
- C01F 7/441 - Dehydration of aluminium oxide or hydroxide, i.e. all conversions of one form into another involving a loss of water by calcination
Patent holdings for IPC class C01F 7/441
Total number of patents in this class: 75
10-year publication summary
|
1
|
0
|
0
|
5
|
6
|
9
|
18
|
11
|
11
|
11
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| BASF Corporation | 1682 |
6 |
| Saint-Gobain Ceramics & Plastics, Inc. | 804 |
5 |
| Corning Incorporated | 10558 |
4 |
| Zhengzhou Non-Ferrous Metals Research Institute Co.Ltd of Chalco | 85 |
4 |
| Sasol Germany GmbH | 192 |
3 |
| Sumitomo Chemical Company, Limited | 8992 |
2 |
| IFP Energies Nouvelles | 3125 |
2 |
| Nippon Light Metal Company, Ltd. | 695 |
2 |
| Rhodia Operations | 1483 |
2 |
| Evonik Operations GmbH | 4443 |
2 |
| Brimstone Energy Inc. | 24 |
2 |
| Veganicskn Limited | 6 |
2 |
| Advance Zinctek Limited | 21 |
2 |
| Metso Metals Oy | 226 |
2 |
| Lava Blue Ltd | 8 |
2 |
| Susonity Commercial GmbH | 212 |
2 |
| New Wave Royalties Sociedad Anonima | 6 |
2 |
| 3m Innovative Properties Company | 17443 |
1 |
| Admatechs Company Limited | 109 |
1 |
| Alcoa of Australia Limited | 42 |
1 |
| Other owners | 26 |