- All sections
- H - Electricity
- H01M - Processes or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy
- H01M 8/2457 - Grouping of fuel cells, e.g. stacking of fuel cells with both reactants being gaseous or vaporised
Patent holdings for IPC class H01M 8/2457
Total number of patents in this class: 253
10-year publication summary
|
18
|
41
|
37
|
23
|
30
|
31
|
13
|
20
|
32
|
7
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Honda Motor Co., Ltd. | 24537 |
28 |
| Toyota Motor Corporation | 28582 |
20 |
| Hyundai Motor Company | 19021 |
16 |
| Morimura Sofc Technology Co.,Ltd | 94 |
12 |
| Kyocera Corporation | 12735 |
10 |
| Robert Bosch GmbH | 40953 |
9 |
| Audi AG | 7153 |
8 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10525 |
7 |
| Nissan Motor Co., Ltd. | 12249 |
6 |
| Kia Motors Corporation | 7946 |
6 |
| Watt Fuel Cell Corp. | 122 |
6 |
| Honeywell International Inc. | 13799 |
5 |
| Hydrogenics Corporation | 204 |
5 |
| Intelligent Energy Limited | 464 |
5 |
| Bloom Energy Corporation | 590 |
4 |
| Toyota Shatai Kabushiki Kaisha | 442 |
4 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
3 |
| Alakai Technologies Corporation | 55 |
3 |
| Ceres Intellectual Property Company Limited | 250 |
3 |
| FuelCell Energy, Inc. | 337 |
3 |
| Other owners | 90 |