Passive carbon-oxygen battery system and method of use thereof
US-2025323292-A1 · Oct 16, 2025 · US
Fuel cells with molten hydroxide · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01M8/146 |
| Official title | {Fuel cells with molten hydroxide} |
| Display label | Fuel cells with molten hydroxide |
| Total patents | 11 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2017 | 2 |
| 2018 | 1 |
| 2019 | 1 |
| 2020 | 1 |
| 2021 | 1 |
| 2025 | 4 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-2025323292-A1 · Oct 16, 2025 · US
US-12381244-B2 · Aug 5, 2025 · US
US-2025183341-A1 · Jun 5, 2025 · US
US-12308485-B2 · May 20, 2025 · US
US-2021351425-A1 · Nov 11, 2021 · US
US-10711356-B2 · Jul 14, 2020 · US
US-2019379063-A1 · Dec 12, 2019 · US
US-9917321-B2 · Mar 13, 2018 · US
US-2017298524-A1 · Oct 19, 2017 · US
US-9564650-B2 · Feb 7, 2017 · US
US-9225030-B1 · Dec 29, 2015 · US