Aqueous redox flow batteries comprising metal ligand coordination compounds
US-2017352905-A1 · Dec 7, 2017 · US
Fuel cells with aqueous electrolytes
Fuel cells with aqueous electrolytes · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01M8/08 |
| Official title | Fuel cells with aqueous electrolytes |
| Display label | Fuel cells with aqueous electrolytes |
| Total patents | 246 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 17 |
| 2016 | 26 |
| 2017 | 23 |
| 2018 | 25 |
| 2019 | 23 |
| 2020 | 29 |
| 2021 | 16 |
| 2022 | 30 |
| 2023 | 22 |
| 2024 | 18 |
| 2025 | 9 |
| 2026 | 8 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Redox flow batteries based on supporting solutions containing chloride
US-9819039-B2 · Nov 14, 2017 · US
Three-chamber electrochemical balancing cells for simultaneous modification of state of charge and acidity within a flow battery
US-2017317363-A1 · Nov 2, 2017 · US
Zinc-air secondary battery
US-2017271731-A1 · Sep 21, 2017 · US
Aqueous redox flow batteries comprising metal ligand coordination compounds
US-9768463-B2 · Sep 19, 2017 · US
Processes for forming coordination complexes containing monosulfonated catecholate ligands
US-2017253620-A1 · Sep 7, 2017 · US
Coordination complexes containing monosulfonated catecholate ligands and methods for producing the same
US-2017256811-A1 · Sep 7, 2017 · US
Proton conductor and fuel cell
US-2017250430-A1 · Aug 31, 2017 · US
High solubility iron hexacyanides
US-9742021-B2 · Aug 22, 2017 · US
Proton-battery based on graphene derivatives
US-9728771-B2 · Aug 8, 2017 · US
Inexpensive metal-free organic redox flow battery (orbat) for grid-scale storage
US-2017187060-A1 · Jun 29, 2017 · US
High performance reversible electrochemical cell for H2O electrolysis or conversion of CO2 and H2O to fuel
US-9631286-B2 · Apr 25, 2017 · US
Flow battery cells and stacks, and associated methods
US-2017098851-A1 · Apr 6, 2017 · US
Inexpensive metal-free organic redox flow battery (ORBAT) for grid-scale storage
US-9614245-B2 · Apr 4, 2017 · US
Electrolyte for iron-air batteries and iron-air battery
US-2017077571-A1 · Mar 16, 2017 · US
Gas diffusion substrate
US-2017062836-A1 · Mar 2, 2017 · US
Electrolyte for metal-air batteries, and metal-air battery
US-2017018828-A1 · Jan 19, 2017 · US
Conductive polymer layers to limit transfer of fuel reactants to catalysts of fuel cells to reduce reactant crossover
US-9515340-B1 · Dec 6, 2016 · US
Curable compositions and membranes
US-9487418-B2 · Nov 8, 2016 · US
Aqueous redox flow batteries comprising metal ligand coordination compounds
US-2016276694-A1 · Sep 22, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01M8/08?
- CPC H01M8/08 is the Cooperative Patent Classification code for “Fuel cells with aqueous electrolytes.”
- How many patents are filed under CPC H01M8/08 (Fuel cells with aqueous electrolytes)?
- Our database includes 246 publications tagged with this CPC code.
- Is patent activity under CPC H01M8/08 growing?
- Publication counts under this code: 18 in 2024 vs 9 in 2025 (latest complete years).