- All sections
- C - Chemistrymetallurgy
- C25B - Electrolytic or electrophoretic processes for the production of compounds or non- metalsapparatus therefor
- C25B 9/20 - Assemblies comprising a plurality of cells of the filter-press type
Patent holdings for IPC class C25B 9/20
Total number of patents in this class: 223
10-year publication summary
|
32
|
27
|
33
|
34
|
24
|
16
|
0
|
0
|
0
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Commissariat à l'énergie atomique et aux energies alternatives | 10928 |
26 |
| Nuvera Fuel Cells, LLC | 108 |
12 |
| Asahi Kasei Kabushiki Kaisha | 2660 |
9 |
| Next Hydrogen Corporation | 28 |
8 |
| Siemens AG | 24518 |
7 |
| Reinz-Dichtungs-GmbH | 279 |
6 |
| Htceramix S.A. | 15 |
5 |
| Honda Motor Co., Ltd. | 25192 |
4 |
| Calera Corporation | 106 |
4 |
| Repsol, S.A. | 483 |
4 |
| Hymeth ApS | 22 |
4 |
| NGK Spark Plug Co., Ltd. | 893 |
3 |
| Industrie de Nora S.p.A. | 277 |
3 |
| Hoeller Electrolyzer GmbH | 37 |
3 |
| Cleanwater1, Inc. | 27 |
3 |
| Kyocera Corporation | 13792 |
2 |
| Advanced Combustion Technologies, Inc. | 5 |
2 |
| Areva H2gen | 5 |
2 |
| Clean Power Hydrogen Limited | 5 |
2 |
| de Nora Permelec Ltd | 159 |
2 |
| Other owners | 112 |