- All sections
- H - Electricity
- H01M - Processes or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy
- H01M 8/04791 - ConcentrationDensity
Patent holdings for IPC class H01M 8/04791
Total number of patents in this class: 296
10-year publication summary
|
27
|
28
|
13
|
21
|
27
|
22
|
22
|
29
|
26
|
33
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Robert Bosch GmbH | 43114 |
40 |
| Hyundai Motor Company | 22888 |
27 |
| Kia Motors Corporation | 7743 |
16 |
| Toyota Motor Corporation | 33572 |
10 |
| FuelCell Energy, Inc. | 325 |
8 |
| Kia Corporation | 10617 |
8 |
| ExxonMobil Technology and Engineering Company | 1185 |
7 |
| ExxonMobil Research And Engineering Company | 2525 |
6 |
| Nissan Motor Co., Ltd. | 12683 |
6 |
| Hydrogenics Corporation | 189 |
6 |
| Honda Motor Co., Ltd. | 25780 |
5 |
| GM Global Technology Operations LLC | 15421 |
5 |
| Kyocera Corporation | 14102 |
5 |
| ESS Tech, Inc. | 200 |
5 |
| MANN+HUMMEL GmbH | 1778 |
5 |
| Proton Motor Fuel Cell GmbH | 37 |
5 |
| Uop LLC | 4259 |
4 |
| Audi AG | 7402 |
4 |
| Intelligent Energy Limited | 401 |
4 |
| Bayerische Motoren Werke Aktiengesellschaft | 14735 |
3 |
| Other owners | 117 |