- All sections
- C - Chemistrymetallurgy
- C22B - Production or refining of metalspretreatment of raw materials
- C22B 21/00 - Obtaining aluminium
Patent holdings for IPC class C22B 21/00
Total number of patents in this class: 763
10-year publication summary
|
40
|
28
|
31
|
23
|
36
|
28
|
37
|
64
|
94
|
75
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Molten Metal Equipment Innovations, LLC | 99 |
31 |
| Guangdong Brunp Recycling Technology Co., Ltd | 1244 |
30 |
| Hunan Brunp Recycling Technology Co., Ltd. | 1213 |
30 |
| Novelis Inc. | 766 |
27 |
| Pyrotek, Inc. | 201 |
17 |
| Altek Europe Limited | 36 |
16 |
| JX Metals Circular Solutions Co., Ltd. | 64 |
15 |
| Constellium Neuf-brisach | 138 |
12 |
| Hunan Brunp EV Recycling Co., Ltd. | 375 |
12 |
| Constellium Issoire | 219 |
11 |
| House of Metals Company Limited | 34 |
10 |
| Norsk Hydro ASA | 262 |
10 |
| Li-Cycle Corp. | 38 |
10 |
| AEM Canada Group Inc. | 13 |
10 |
| Constellium Muscle Shoals LLC | 29 |
9 |
| AEM Technologies Inc. | 35 |
9 |
| Altek, L.L.C. | 15 |
8 |
| Sumitomo Metal Mining Co., Ltd. | 1794 |
8 |
| Toyota Tsusho Corporation | 181 |
8 |
| BASF SE | 21036 |
7 |
| Other owners | 473 |