- All sections
- C - Chemistrymetallurgy
- C25B - Electrolytic or electrophoretic processes for the production of compounds or non- metalsapparatus 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: 871
10-year publication summary
|
1
|
3
|
7
|
2
|
39
|
81
|
126
|
179
|
233
|
130
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Siemens Energy Global GmbH & Co. KG | 3335 |
44 |
| Robert Bosch GmbH | 44128 |
34 |
| ThyssenKrupp Nucera AG & Co. KGaA | 86 |
32 |
| Bloom Energy Corporation | 698 |
23 |
| Commissariat à l'énergie atomique et aux energies alternatives | 11127 |
20 |
| Asahi Kasei Kabushiki Kaisha | 2828 |
16 |
| Topsoe A/S | 1044 |
14 |
| Ceres Intellectual Property Company Limited | 253 |
13 |
| Honda Motor Co., Ltd. | 26008 |
12 |
| Industrie de Nora S.p.A. | 283 |
12 |
| Samsung Electro-mechanics Co., Ltd. | 6073 |
11 |
| Schaeffler Technologies AG & Co. KG | 10948 |
11 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 4120 |
11 |
| Twelve Benefit Corporation | 152 |
11 |
| John Cockerill Hydrogen Belgium SA | 46 |
11 |
| Schlumberger Technology Corporation | 11798 |
10 |
| Toshiba Corporation | 12548 |
10 |
| Tokuyama Corporation | 1474 |
10 |
| Genvia | 51 |
10 |
| Schlumberger Canada Limited | 7606 |
9 |
| Other owners | 547 |