- 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: 6658
10-year publication summary
|
197
|
235
|
285
|
300
|
431
|
594
|
856
|
1059
|
1116
|
301
|
| 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 | 3237 |
182 |
| Robert Bosch GmbH | 43500 |
80 |
| King Fahd University of Petroleum and Minerals | 1467 |
77 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10975 |
74 |
| Panasonic Intellectual Property Management Co., Ltd. | 33401 |
72 |
| Honda Motor Co., Ltd. | 25846 |
64 |
| Topsoe A/S | 993 |
64 |
| Toshiba Corporation | 12698 |
58 |
| Saudi Arabian Oil Company | 13940 |
56 |
| Ohmium International, Inc. | 132 |
53 |
| Toyota Motor Corporation | 34387 |
50 |
| Industrie de Nora S.p.A. | 280 |
45 |
| Linde GmbH | 1332 |
44 |
| de Nora Permelec Ltd | 163 |
43 |
| Infinium Technology, LLC | 94 |
42 |
| Asahi Kasei Kabushiki Kaisha | 2772 |
41 |
| Verdagy, Inc. | 66 |
38 |
| Totalenergies Onetech | 1489 |
38 |
| Mitsubishi Heavy Industries, Ltd. | 9010 |
37 |
| Hyundai Motor Company | 23540 |
36 |
| Other owners | 5464 |