- All sections
- C - Chemistrymetallurgy
- C01F - Compounds of the metals beryllium, magnesium, aluminium, calcium, strontium, barium, radium, thorium, or of the rare earth metals
- C01F 7/021 - After-treatment of oxides or hydroxides
Patent holdings for IPC class C01F 7/021
Total number of patents in this class: 91
10-year publication summary
|
1
|
2
|
1
|
3
|
6
|
15
|
12
|
20
|
18
|
6
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Denka Company Limited | 2703 |
6 |
| Sumitomo Chemical Company, Limited | 9013 |
5 |
| Sasol (USA) Corporation | 69 |
4 |
| Nippon Steel Chemical & Material Co., Ltd. | 703 |
4 |
| Resonac Corporation | 3256 |
4 |
| Samsung SDI Co., Ltd. | 10047 |
3 |
| The Regents of the University of California | 20587 |
2 |
| Corning Incorporated | 10431 |
2 |
| Admatechs Company Limited | 90 |
2 |
| Qatar University | 185 |
2 |
| Taiyo Nippon Sanso Corporation | 369 |
2 |
| Tokyo Institute of Technology | 1324 |
2 |
| Aluminum Technologies, LLC | 6 |
2 |
| Rayotek Scientific, LLC | 13 |
2 |
| Karbolution Inc. | 2 |
2 |
| Apple Inc. | 58208 |
1 |
| LG Chem, Ltd. | 17867 |
1 |
| FUJIFILM Corporation | 30296 |
1 |
| TDK Corporation | 6818 |
1 |
| Braskem America, Inc. | 224 |
1 |
| Other owners | 42 |