- 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 7/47 - Purification of aluminium oxide, aluminium hydroxide or aluminates of aluminates, e.g. removal of compounds of Si, Fe, Ga or of organic compounds from Bayer process liquors
Patent holdings for IPC class C01F 7/47
Total number of patents in this class: 48
10-year publication summary
|
0
|
2
|
4
|
4
|
5
|
1
|
5
|
3
|
4
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Alcoa of Australia Limited | 54 |
7 |
| Ecolab USA Inc. | 5190 |
7 |
| Nalco Company | 620 |
5 |
| Rio Tinto ALCAN International Limited | 214 |
4 |
| Obshchestvo S Ogranichennoy Otvetstvennost'yu "obedinennaya Kompaniya RUSAL Inzhenerno-tekhnologicheskiy Tsentr" | 142 |
3 |
| Aluminium PECHINEY | 21 |
2 |
| Kemira Chemicals, Inc. | 78 |
2 |
| Kemira Oyj | 1167 |
2 |
| Peloton Resources Pty Ltd | 10 |
2 |
| Showa Denko K.K. | 2539 |
1 |
| Accentus plc | 9 |
1 |
| Commonwealth Scientific and Industrial Research Organisation | 1652 |
1 |
| Cytec Industries Inc. | 407 |
1 |
| Cytec Technology Corp. | 328 |
1 |
| The Government of the United States of America, as represented by the Secretary of the Navy | 1102 |
1 |
| Northeastern University | 493 |
1 |
| Very Small Particle Company Pty Ltd. | 7 |
1 |
| Water Mark Technologies, Inc. | 4 |
1 |
| Billiton Aluminium Australia Pty Ltd | 1 |
1 |
| Environmental Engineers International Pty Ltd | 2 |
1 |
| Other owners | 3 |