Multi-compartment hybrid CO2 electrochemical reducer and hydrogen fuel cell
US-2024076783-A1 · Mar 7, 2024 · US
Fuel cells in which the fuel is based on materials comprising carbon or oxygen or hydrogen and other elements; Fuel cells in which the fuel is based on materials comprising only elements other than carbon, oxygen or hydrogen
Fuel cells in which the fuel is based on materials comprising carbon or oxygen or hydrogen and other elements; Fuel cells in which the fuel is based on materials comprising only elements other than carbon, oxygen or hydrogen · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01M8/22 |
| Official title | Fuel cells in which the fuel is based on materials comprising carbon or oxygen or hydrogen and other elements; Fuel cells in which the fuel is based on materials comprising only elements other than carbon, oxygen or hydrogen |
| Display label | Fuel cells in which the fuel is based on materials comprising carbon or oxygen or hydrogen and other elements; Fuel cells in which the fuel is based on materials comprising only elements other than carbon, oxygen or hydrogen |
| Total patents | 259 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 34 |
| 2016 | 37 |
| 2017 | 18 |
| 2018 | 27 |
| 2019 | 24 |
| 2020 | 17 |
| 2021 | 25 |
| 2022 | 9 |
| 2023 | 23 |
| 2024 | 24 |
| 2025 | 17 |
| 2026 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Electrocatalysts, and fuel cells containing them
US-2016365597-A1 · Dec 15, 2016 · US
Processing biomass and petroleum containing materials
US-9517444-B2 · Dec 13, 2016 · US
Solid oxide fuel cell
US-9515322-B2 · Dec 6, 2016 · US
Fuel source, fuel cell system and associated method
US-2016351927-A1 · Dec 1, 2016 · US
Electroactive materials for rechargeable batteries
US-9478794-B2 · Oct 25, 2016 · US
Methods for co-processing carbon dioxide and hydrogen sulfide
US-2016305029-A1 · Oct 20, 2016 · US
Processing biomass and petroleum containing materials
US-2016298141-A1 · Oct 13, 2016 · US
Processing biomass and petroleum containing materials
US-2016289577-A1 · Oct 6, 2016 · US
Processing biomass and petroleum containing materials
US-2016293990-A1 · Oct 6, 2016 · US
Processing biomass and petroleum containing materials
US-2016289706-A1 · Oct 6, 2016 · US
Processing biomass and petroleum containing materials
US-2016289704-A1 · Oct 6, 2016 · US
Processing biomass and petroleum containing materials
US-2016289705-A1 · Oct 6, 2016 · US
Power generation system
US-9461329-B2 · Oct 4, 2016 · US
Rechargeable metal NxOy gas battery system
US-9461349-B2 · Oct 4, 2016 · US
Microreactor
US-9370761-B2 · Jun 21, 2016 · US
Rechargeable metal nitric oxide gas battery
US-9368847-B2 · Jun 14, 2016 · US
Cathode for litium-air battery
US-2016164080-A1 · Jun 9, 2016 · US
Processing biomass and petroleum containing materials
US-9352294-B1 · May 31, 2016 · US
Fuel cell system using hydrogen supply manifold
US-2016118675-A1 · Apr 28, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01M8/22?
- CPC H01M8/22 is the Cooperative Patent Classification code for “Fuel cells in which the fuel is based on materials comprising carbon or oxygen or hydrogen and other elements; Fuel cells in which the fuel is based on materials comprising only elements other than carbon, oxygen or hydrogen.”
- How many patents are filed under CPC H01M8/22 (Fuel cells in which the fuel is based on materials comprising carbon or oxygen or hydrogen and other elements; Fuel cells in which the fuel is based on materials comprising only elements other than carbon, oxygen or hydrogen)?
- Our database includes 259 publications tagged with this CPC code.
- Is patent activity under CPC H01M8/22 growing?
- Publication counts under this code: 24 in 2024 vs 17 in 2025 (latest complete years).