- 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: 5798
10-year publication summary
|
211
|
197
|
235
|
285
|
300
|
430
|
590
|
839
|
1054
|
758
|
| 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 | 2998 |
133 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10930 |
69 |
| Panasonic Intellectual Property Management Co., Ltd. | 31696 |
67 |
| Robert Bosch GmbH | 42742 |
62 |
| King Fahd University of Petroleum and Minerals | 1248 |
58 |
| Honda Motor Co., Ltd. | 25352 |
57 |
| Toshiba Corporation | 12383 |
54 |
| Topsoe A/S | 906 |
54 |
| Ohmium International, Inc. | 125 |
51 |
| Saudi Arabian Oil Company | 13295 |
50 |
| Toyota Motor Corporation | 32599 |
46 |
| de Nora Permelec Ltd | 159 |
40 |
| Linde GmbH | 1256 |
38 |
| Industrie de Nora S.p.A. | 276 |
36 |
| Infinium Technology, LLC | 83 |
35 |
| Verdagy, Inc. | 60 |
34 |
| Siemens AG | 24436 |
33 |
| Hyundai Motor Company | 22167 |
33 |
| Asahi Kasei Kabushiki Kaisha | 2681 |
31 |
| Haldor Topsøe A/S | 658 |
29 |
| Other owners | 4788 |