- 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: 2471
10-year publication summary
|
164
|
180
|
242
|
224
|
221
|
279
|
299
|
303
|
223
|
121
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hyundai Motor Company | 21626 |
179 |
| Honda Motor Co., Ltd. | 25137 |
134 |
| Toyota Motor Corporation | 31451 |
127 |
| Kolon Industries, Inc. | 1628 |
110 |
| Robert Bosch GmbH | 42450 |
107 |
| Kia Motors Corporation | 7759 |
83 |
| Kia Corporation | 9306 |
82 |
| LG Chem, Ltd. | 17561 |
75 |
| Audi AG | 7340 |
61 |
| Nissan Motor Co., Ltd. | 12381 |
52 |
| Johnson Matthey Hydrogen Technologies Limited | 115 |
49 |
| Toray Industries, Inc. | 6891 |
48 |
| Panasonic Intellectual Property Management Co., Ltd. | 30967 |
47 |
| Agc, Inc. | 4744 |
33 |
| GM Global Technology Operations LLC | 14879 |
29 |
| 3m Innovative Properties Company | 17849 |
26 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10837 |
23 |
| Volkswagen AG | 7307 |
23 |
| Greenerity GmbH | 48 |
22 |
| Toppan Printing Co., Ltd. | 2138 |
22 |
| Other owners | 1139 |