- All sections
- C - Chemistry; metallurgy
- 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: 47
10-year publication summary
|
1
|
1
|
0
|
0
|
5
|
5
|
8
|
16
|
9
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Saint-Gobain Ceramics & Plastics, Inc. | 837 |
5 |
| Corning Incorporated | 10087 |
4 |
| Sasol Germany GmbH | 204 |
3 |
| Advance Zinctek Limited | 4 |
3 |
| Merck Patent GmbH | 5849 |
2 |
| BASF Corporation | 1822 |
2 |
| Sumitomo Chemical Company, Limited | 8966 |
2 |
| Nippon Light Metal Company, Ltd. | 650 |
2 |
| Rhodia Operations | 1588 |
2 |
| Brimstone Energy Inc. | 16 |
2 |
| 3m Innovative Properties Company | 17968 |
1 |
| Admatechs Company Limited | 74 |
1 |
| Guangdong Brunp Recycling Technology Co., Ltd | 958 |
1 |
| Hunan Brunp Recycling Technology Co., Ltd. | 916 |
1 |
| Kent State University | 242 |
1 |
| Scandium International Mining Corporation | 12 |
1 |
| Tcera Co., Ltd. | 3 |
1 |
| "mytilineos Societe Anonyme- | 3 |
1 |
| Nippon Steel Chemical & Material Co., Ltd. | 613 |
1 |
| Imertech SAS | 223 |
1 |
| Other owners | 10 |