- All sections
- H - Electricity
- H01M - Processes or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy
- H01M 8/04791 - Concentration; Density
Patent holdings for IPC class H01M 8/04791
Total number of patents in this class: 237
10-year publication summary
|
8
|
29
|
31
|
14
|
21
|
27
|
22
|
24
|
31
|
3
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hyundai Motor Company | 19021 |
26 |
| Robert Bosch GmbH | 40953 |
22 |
| Kia Motors Corporation | 7946 |
16 |
| Toyota Motor Corporation | 28582 |
11 |
| ExxonMobil Research And Engineering Company | 2830 |
7 |
| Kia Corporation | 6450 |
7 |
| Nissan Motor Co., Ltd. | 12249 |
6 |
| FuelCell Energy, Inc. | 337 |
6 |
| Honda Motor Co., Ltd. | 24537 |
5 |
| GM Global Technology Operations LLC | 13620 |
5 |
| Hydrogenics Corporation | 204 |
5 |
| Proton Motor Fuel Cell GmbH | 38 |
5 |
| Uop LLC | 4083 |
4 |
| ESS Tech, Inc. | 158 |
4 |
| Intelligent Energy Limited | 464 |
4 |
| Raytheon Technologies Corporation | 332 |
4 |
| Kyocera Corporation | 12735 |
3 |
| Audi AG | 7153 |
3 |
| Bloom Energy Corporation | 590 |
3 |
| MANN+HUMMEL GmbH | 1682 |
3 |
| Other owners | 88 |