- All sections
- C - Chemistry; metallurgy
- C25B - Electrolytic or electrophoretic processes for the production of compounds or non- metals; apparatus therefor
- C25B 9/77 - Assemblies comprising two or more cells of the filter-press type having diaphragms
Patent holdings for IPC class C25B 9/77
Total number of patents in this class: 264
10-year publication summary
|
0
|
0
|
1
|
1
|
7
|
2
|
39
|
75
|
104
|
25
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Siemens Energy Global GmbH & Co. KG | 2775 |
19 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10525 |
9 |
| ThyssenKrupp Nucera AG & Co. KGaA | 27 |
9 |
| Asahi Kasei Kabushiki Kaisha | 2429 |
8 |
| Bloom Energy Corporation | 590 |
8 |
| Ceres Intellectual Property Company Limited | 250 |
8 |
| Hoeller Electrolyzer GmbH | 35 |
8 |
| Industrie de Nora S.p.A. | 274 |
7 |
| Danfoss A/S | 1259 |
7 |
| Enapter SRL | 30 |
7 |
| Ohmium International, Inc. | 105 |
6 |
| Topsoe A/S | 732 |
6 |
| Siemens AG | 24990 |
4 |
| Toshiba Corporation | 12017 |
4 |
| Hitachi Zosen iNova AG | 106 |
4 |
| Tokuyama Corporation | 1248 |
4 |
| iGas energy GmbH | 16 |
4 |
| H2pro Ltd | 13 |
4 |
| Twelve Benefit Corporation | 111 |
4 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
3 |
| Other owners | 131 |