- All sections
- H - Electricity
- H01M - Processes or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy
- H01M 8/04291 - Arrangements for managing water in solid electrolyte fuel cell systems
Patent holdings for IPC class H01M 8/04291
Total number of patents in this class: 338
10-year publication summary
|
26
|
35
|
35
|
40
|
48
|
30
|
21
|
35
|
27
|
12
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toyota Motor Corporation | 28582 |
40 |
| Hyundai Motor Company | 19021 |
32 |
| Robert Bosch GmbH | 40953 |
26 |
| Audi AG | 7153 |
16 |
| Nissan Motor Co., Ltd. | 12249 |
14 |
| Kia Motors Corporation | 7946 |
12 |
| Honda Motor Co., Ltd. | 24537 |
11 |
| Intelligent Energy Limited | 464 |
8 |
| Toyota Shatai Kabushiki Kaisha | 442 |
8 |
| Kia Corporation | 6450 |
8 |
| FuelCell Energy, Inc. | 337 |
6 |
| cellcentric GmbH & Co. KG | 160 |
6 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
5 |
| Volkswagen AG | 6966 |
5 |
| The Boeing Company | 19843 |
4 |
| Toshiba Corporation | 12017 |
4 |
| Ceres Intellectual Property Company Limited | 250 |
4 |
| Hydrolite Ltd | 39 |
4 |
| Airbus Operations GmbH | 3188 |
3 |
| GM Global Technology Operations LLC | 13620 |
3 |
| Other owners | 119 |