- All sections
- C - Chemistrymetallurgy
- C25B - Electrolytic or electrophoretic processes for the production of compounds or non- metalsapparatus therefor
- C25B 1/04 - Hydrogen or oxygen by electrolysis of water
Patent holdings for IPC class C25B 1/04
Total number of patents in this class: 6019
10-year publication summary
|
211
|
197
|
235
|
285
|
300
|
431
|
591
|
844
|
1055
|
930
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Siemens Energy Global GmbH & Co. KG | 3046 |
145 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10961 |
69 |
| Panasonic Intellectual Property Management Co., Ltd. | 32199 |
67 |
| Robert Bosch GmbH | 42922 |
64 |
| King Fahd University of Petroleum and Minerals | 1326 |
61 |
| Honda Motor Co., Ltd. | 25774 |
60 |
| Toshiba Corporation | 12520 |
57 |
| Topsoe A/S | 943 |
57 |
| Saudi Arabian Oil Company | 13512 |
53 |
| Ohmium International, Inc. | 127 |
52 |
| Toyota Motor Corporation | 33183 |
46 |
| de Nora Permelec Ltd | 159 |
41 |
| Linde GmbH | 1274 |
39 |
| Industrie de Nora S.p.A. | 277 |
37 |
| Infinium Technology, LLC | 85 |
36 |
| Asahi Kasei Kabushiki Kaisha | 2711 |
35 |
| Verdagy, Inc. | 64 |
35 |
| Hyundai Motor Company | 22580 |
34 |
| Siemens AG | 24366 |
33 |
| Mitsubishi Heavy Industries, Ltd. | 8846 |
31 |
| Other owners | 4967 |