- All sections
- H - Electricity
- H01M - Processes or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy
- H01M 8/1004 - Fuel cells with solid electrolytes characterised by membrane-electrode assemblies [MEA]
Patent holdings for IPC class H01M 8/1004
Total number of patents in this class: 2536
10-year publication summary
|
149
|
172
|
230
|
218
|
214
|
268
|
285
|
291
|
223
|
181
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hyundai Motor Company | 22086 |
183 |
| Honda Motor Co., Ltd. | 25327 |
142 |
| Toyota Motor Corporation | 32450 |
129 |
| Kolon Industries, Inc. | 1688 |
114 |
| Robert Bosch GmbH | 42705 |
110 |
| Kia Corporation | 9780 |
86 |
| Kia Motors Corporation | 7754 |
83 |
| LG Chem, Ltd. | 17635 |
75 |
| Audi AG | 7366 |
61 |
| Nissan Motor Co., Ltd. | 12516 |
52 |
| Johnson Matthey Hydrogen Technologies Limited | 115 |
51 |
| Toray Industries, Inc. | 6950 |
48 |
| Panasonic Intellectual Property Management Co., Ltd. | 31562 |
47 |
| Agc, Inc. | 4868 |
34 |
| GM Global Technology Operations LLC | 15095 |
29 |
| 3m Innovative Properties Company | 17823 |
27 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10931 |
23 |
| Volkswagen AG | 7339 |
23 |
| Greenerity GmbH | 48 |
22 |
| Toppan Printing Co., Ltd. | 2133 |
22 |
| Other owners | 1175 |