- All sections
- C - Chemistry; metallurgy
- C25C - Processes for the electrolytic production, recovery or refining of metals; apparatus therefor
- C25C 3/08 - Cell construction, e.g. bottoms, walls, cathodes
Patent holdings for IPC class C25C 3/08
Total number of patents in this class: 410
10-year publication summary
33
|
29
|
31
|
28
|
27
|
8
|
23
|
19
|
20
|
4
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Rio Tinto ALCAN International Limited | 214 |
34 |
Alcoa USA Corp. | 187 |
30 |
SGL Carbon SE | 388 |
29 |
Norsk Hydro ASA | 288 |
26 |
Obshchestvo S Ogranichennoy Otvetstvennost'yu "obedinennaya Kompaniya RUSAL Inzhenerno-tekhnologicheskiy Tsentr" | 142 |
25 |
Tokai Cobex GmbH | 45 |
23 |
China Aluminum International Engineering Corporation Limited | 81 |
22 |
Elysis Limited Partnership | 62 |
19 |
Dubai Aluminium PJSC | 56 |
12 |
Aluminum Corporation of China Limited | 35 |
11 |
Saint-Gobain Centre de Recherches et d'Etudes Europeen | 475 |
7 |
United Company RUSAL Engineering and Technology Centre LLC | 22 |
7 |
Mid-Mountain Materials, Inc. | 21 |
6 |
Fives Ecl. | 23 |
5 |
Goodtech Recovery Technology AS | 8 |
5 |
Hatch Ltd. | 219 |
5 |
Moltech Invent S.A. | 8 |
5 |
Novalum SA | 7 |
5 |
BHP Billiton Aluminium Technologies Limited | 5 |
4 |
SEC Carbon, Limited | 25 |
4 |
Other owners | 126 |