- All sections
- H - Electricity
- H01M - Processes or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy
- H01M 8/18 - Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells
Patent holdings for IPC class H01M 8/18
Total number of patents in this class: 3167
10-year publication summary
|
249
|
297
|
293
|
387
|
357
|
292
|
251
|
281
|
345
|
97
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sumitomo Electric Industries, Ltd. | 14131 |
253 |
| ESS Tech, Inc. | 158 |
145 |
| Lockheed Martin Energy, LLC | 136 |
105 |
| LG Chem, Ltd. | 17205 |
62 |
| Panasonic Intellectual Property Management Co., Ltd. | 27812 |
51 |
| Showa Denko K.K. | 2539 |
51 |
| Massachusetts Institute of Technology | 9795 |
41 |
| Battelle Memorial Institute | 2356 |
41 |
| Raytheon Technologies Corporation | 332 |
38 |
| Lotte Chemical Corporation | 591 |
37 |
| Uop LLC | 4083 |
36 |
| Cmblu Energy AG | 36 |
26 |
| Acal Energy Limited | 34 |
24 |
| Siemens AG | 24990 |
22 |
| OCI Company Ltd. | 131 |
22 |
| Toyobo Co., Ltd. | 2286 |
22 |
| Voith Patent GmbH | 2727 |
22 |
| President and Fellows of Harvard College | 5792 |
21 |
| Form Energy, Inc. | 156 |
21 |
| Korea Institute of Energy Research | 803 |
20 |
| Other owners | 2107 |