- All sections
- C - Chemistry; metallurgy
- C22B - Production or refining of metals; pretreatment of raw materials
- C22B 21/00 - Obtaining aluminium
Patent holdings for IPC class C22B 21/00
Total number of patents in this class: 582
10-year publication summary
46
|
41
|
30
|
40
|
29
|
45
|
32
|
42
|
68
|
30
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Molten Metal Equipment Innovations, LLC | 96 |
31 |
Novelis Inc. | 656 |
22 |
Guangdong Brunp Recycling Technology Co., Ltd | 674 |
18 |
Hunan Brunp Recycling Technology Co., Ltd. | 622 |
18 |
Pyrotek, Inc. | 193 |
18 |
Altek Europe Limited | 37 |
16 |
House of Metals Company Limited | 33 |
10 |
Norsk Hydro ASA | 288 |
10 |
AEM Canada Group Inc. | 13 |
10 |
Hunan Brunp EV Recycling Co., Ltd. | 327 |
10 |
AEM Technologies Inc. | 33 |
9 |
Altek, L.L.C. | 16 |
8 |
Li-Cycle Corp. | 36 |
8 |
The Boeing Company | 19843 |
7 |
Constellium Issoire | 208 |
7 |
JX Nippon Mining & Metals Corporation | 1576 |
7 |
Obshchestvo S Ogranichennoy Otvetstvennost'yu "obedinennaya Kompaniya RUSAL Inzhenerno-tekhnologicheskiy Tsentr" | 142 |
7 |
Orbite Aluminae Inc. | 14 |
7 |
Coogee Titanium Pty Ltd | 12 |
7 |
JX Metals Corporation | 111 |
7 |
Other owners | 345 |