- 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: 6484
10-year publication summary
|
197
|
235
|
285
|
300
|
431
|
593
|
853
|
1058
|
1116
|
161
|
| 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 | 3173 |
168 |
| King Fahd University of Petroleum and Minerals | 1439 |
75 |
| Robert Bosch GmbH | 43321 |
74 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10971 |
73 |
| Panasonic Intellectual Property Management Co., Ltd. | 33033 |
70 |
| Topsoe A/S | 985 |
64 |
| Honda Motor Co., Ltd. | 25773 |
63 |
| Toshiba Corporation | 12546 |
57 |
| Saudi Arabian Oil Company | 13865 |
56 |
| Ohmium International, Inc. | 132 |
53 |
| Toyota Motor Corporation | 33999 |
47 |
| de Nora Permelec Ltd | 161 |
43 |
| Industrie de Nora S.p.A. | 277 |
41 |
| Linde GmbH | 1322 |
41 |
| Asahi Kasei Kabushiki Kaisha | 2745 |
38 |
| Verdagy, Inc. | 66 |
38 |
| Infinium Technology, LLC | 89 |
36 |
| Hyundai Motor Company | 23273 |
35 |
| Mitsubishi Heavy Industries, Ltd. | 8964 |
34 |
| Siemens AG | 24291 |
33 |
| Other owners | 5345 |