- All sections
- C - Chemistrymetallurgy
- C25C - Processes for the electrolytic production, recovery or refining of metalsapparatus therefor
- C25C 3/22 - Collecting emitted gases
Patent holdings for IPC class C25C 3/22
Total number of patents in this class: 121
10-year publication summary
13
|
4
|
1
|
6
|
15
|
2
|
9
|
1
|
6
|
1
|
2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Norsk Hydro ASA | 264 |
12 |
Alstom Technology Ltd | 1112 |
9 |
Reel Alesa AG | 13 |
9 |
Solios Environnement | 18 |
8 |
Rio Tinto ALCAN International Limited | 216 |
7 |
Reel Alesa AG | 17 |
7 |
BASF SE | 20758 |
4 |
Alcoa Inc. | 295 |
4 |
Alcoa USA Corp. | 198 |
4 |
ThyssenKrupp AG | 3262 |
4 |
Reel Alesa | 4 |
4 |
China Aluminum International Engineering Corporation Limited | 89 |
3 |
ThyssenKrupp Industrial Solutions AG | 636 |
3 |
ThyssenKrupp Uhde GmbH | 325 |
3 |
Elysis Limited Partnership | 46 |
3 |
Alliance Magnesium | 16 |
2 |
Aluminium PECHINEY | 9 |
2 |
Danieli Corus BV | 26 |
2 |
Fives Solios | 27 |
2 |
Obshchestvo S Ogranichennoy Otvetstvennost'yu "obedinennaya Kompaniya RUSAL Inzhenerno-tekhnologicheskiy Tsentr" | 131 |
2 |
Other owners | 27 |