- All sections
- C - Chemistry; metallurgy
- C25C - Processes for the electrolytic production, recovery or refining of metals; apparatus therefor
- C25C 3/20 - Automatic control or regulation of cells
Patent holdings for IPC class C25C 3/20
Total number of patents in this class: 110
10-year publication summary
5
|
9
|
12
|
8
|
6
|
5
|
7
|
4
|
9
|
0
|
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 |
14 |
Elysis Limited Partnership | 62 |
10 |
China Aluminum International Engineering Corporation Limited | 81 |
8 |
Alcoa USA Corp. | 187 |
7 |
Alcoa Inc. | 323 |
6 |
Dubai Aluminium PJSC | 56 |
6 |
Norsk Hydro ASA | 288 |
5 |
Newsouth Innovations Pty Limited | 567 |
4 |
Obshchestvo S Ogranichennoy Otvetstvennost'yu "obedinennaya Kompaniya RUSAL Inzhenerno-tekhnologicheskiy Tsentr" | 142 |
4 |
Fives Ecl. | 23 |
3 |
United Company RUSAL Engineering and Technology Centre LLC | 22 |
3 |
University of Rochester | 1243 |
3 |
Robert Bosch GmbH | 40953 |
2 |
Aluminum Corporation of China Limited | 35 |
2 |
North China University of Technology | 15 |
2 |
General Electric Company | 18133 |
1 |
Toshiba Corporation | 12017 |
1 |
Auckland UniServices Limited | 503 |
1 |
BHP Billiton Aluminium Technologies Limited | 5 |
1 |
BHP Billiton Innovation Pty Ltd. | 29 |
1 |
Other owners | 26 |