- 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: 66
10-year publication summary
|
1
|
0
|
0
|
4
|
6
|
8
|
14
|
9
|
10
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| BASF Corporation | 1690 |
5 |
| Saint-Gobain Ceramics & Plastics, Inc. | 808 |
5 |
| Corning Incorporated | 10413 |
4 |
| Sasol Germany GmbH | 198 |
3 |
| Sumitomo Chemical Company, Limited | 9052 |
2 |
| Nippon Light Metal Company, Ltd. | 678 |
2 |
| Rhodia Operations | 1533 |
2 |
| Brimstone Energy Inc. | 24 |
2 |
| Veganicskn Limited | 6 |
2 |
| Advance Zinctek Limited | 22 |
2 |
| Metso Metals Oy | 217 |
2 |
| Lava Blue Ltd | 7 |
2 |
| Zhengzhou Non-Ferrous Metals Research Institute Co.Ltd of Chalco | 61 |
2 |
| Susonity Commercial GmbH | 210 |
2 |
| 3m Innovative Properties Company | 17565 |
1 |
| Admatechs Company Limited | 89 |
1 |
| Aramco Services Company | 4167 |
1 |
| China Petroleum & Chemical Corporation | 2018 |
1 |
| Guangdong Brunp Recycling Technology Co., Ltd | 1248 |
1 |
| Hunan Brunp Recycling Technology Co., Ltd. | 1217 |
1 |
| Other owners | 23 |