- 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: 2575
10-year publication summary
|
149
|
172
|
230
|
218
|
214
|
268
|
285
|
291
|
223
|
219
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hyundai Motor Company | 22484 |
184 |
| Honda Motor Co., Ltd. | 25776 |
151 |
| Toyota Motor Corporation | 33077 |
130 |
| Kolon Industries, Inc. | 1705 |
121 |
| Robert Bosch GmbH | 42861 |
110 |
| Kia Corporation | 10192 |
87 |
| Kia Motors Corporation | 7749 |
83 |
| LG Chem, Ltd. | 17680 |
75 |
| Audi AG | 7381 |
61 |
| Nissan Motor Co., Ltd. | 12593 |
52 |
| Johnson Matthey Hydrogen Technologies Limited | 119 |
52 |
| Panasonic Intellectual Property Management Co., Ltd. | 32095 |
48 |
| Toray Industries, Inc. | 7006 |
48 |
| Agc, Inc. | 4949 |
34 |
| GM Global Technology Operations LLC | 15220 |
33 |
| 3m Innovative Properties Company | 17762 |
27 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10959 |
23 |
| Volkswagen AG | 7379 |
23 |
| Greenerity GmbH | 48 |
22 |
| Toppan Printing Co., Ltd. | 2128 |
22 |
| Other owners | 1189 |