- All sections
- C - Chemistry; metallurgy
- C22B - Production or refining of metals; pretreatment of raw materials
- C22B 21/04 - Obtaining aluminium with alkali metals
Patent holdings for IPC class C22B 21/04
Total number of patents in this class: 20
10-year publication summary
|
5
|
3
|
2
|
1
|
1
|
0
|
1
|
0
|
3
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Aleris Rolled Products Germany GmbH | 62 |
2 |
| Heggset Teknologi AS | 3 |
2 |
| Kabushiki Kaisha Toyota Chuo Kenkyusho | 587 |
2 |
| Toyota Tsusho Corporation | 163 |
2 |
| North Carolina State University | 1492 |
1 |
| Orbite Technologies Inc. | 8 |
1 |
| The Penn State Research Foundation | 1423 |
1 |
| Pingshuo Industrial Ltd | 2 |
1 |
| Pleason Ventures Ltd | 1 |
1 |
| Pyrotek, Inc. | 193 |
1 |
| Umicore | 542 |
1 |
| University of Bradford | 53 |
1 |
| SOR Norge Aluminium AS | 1 |
1 |
| Tokyo Metropolitan Public University Corporation | 71 |
1 |
| Bradford Metallurgy Ltd | 1 |
1 |
| Ecopro Materials, Co., Ltd. | 17 |
1 |
| Other owners | 0 |