- 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: 7083
10-year publication summary
|
211
|
253
|
318
|
336
|
483
|
692
|
966
|
1154
|
1203
|
679
|
| 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 | 3328 |
201 |
| Robert Bosch GmbH | 44094 |
87 |
| King Fahd University of Petroleum and Minerals | 1563 |
79 |
| Commissariat à l'énergie atomique et aux energies alternatives | 11126 |
76 |
| Topsoe A/S | 1041 |
75 |
| Panasonic Intellectual Property Management Co., Ltd. | 33845 |
72 |
| Honda Motor Co., Ltd. | 26006 |
66 |
| Toshiba Corporation | 12551 |
58 |
| Saudi Arabian Oil Company | 14161 |
56 |
| Ohmium International, Inc. | 130 |
54 |
| Toyota Motor Corporation | 35578 |
50 |
| Industrie de Nora S.p.A. | 283 |
49 |
| Linde GmbH | 1351 |
46 |
| Mitsubishi Heavy Industries, Ltd. | 9099 |
44 |
| Asahi Kasei Kabushiki Kaisha | 2828 |
43 |
| de Nora Permelec Ltd | 164 |
43 |
| Infinium Technology, LLC | 95 |
43 |
| Hyundai Motor Company | 24578 |
38 |
| Verdagy, Inc. | 65 |
38 |
| Totalenergies Onetech | 1534 |
37 |
| Other owners | 5828 |