- 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: 816
10-year publication summary
|
28
|
31
|
23
|
36
|
28
|
37
|
64
|
95
|
93
|
27
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Molten Metal Equipment Innovations, LLC | 100 |
31 |
| Guangdong Brunp Recycling Technology Co., Ltd | 1248 |
30 |
| Hunan Brunp Recycling Technology Co., Ltd. | 1217 |
30 |
| Novelis Inc. | 786 |
30 |
| Pyrotek, Inc. | 205 |
17 |
| JX Metals Circular Solutions Co., Ltd. | 73 |
17 |
| Altek Europe Limited | 36 |
16 |
| Constellium Neuf-brisach | 140 |
12 |
| Hunan Brunp EV Recycling Co., Ltd. | 375 |
12 |
| Constellium Issoire | 223 |
11 |
| House of Metals Company Limited | 34 |
10 |
| AEM Canada Group Inc. | 13 |
10 |
| Norsk Hydro ASA | 250 |
9 |
| Constellium Muscle Shoals LLC | 30 |
9 |
| AEM Technologies Inc. | 36 |
9 |
| 1001297676 Ontario Inc. | 27 |
9 |
| BASF SE | 21131 |
8 |
| The Boeing Company | 20115 |
8 |
| Altek, L.L.C. | 14 |
8 |
| Sumitomo Metal Mining Co., Ltd. | 1919 |
8 |
| Other owners | 522 |