Fuel cell chemical filter monitoring system and methods
US-2024113317-A1 · Apr 4, 2024 · US
Reactant purification by the use of membranes or filters
Reactant purification by the use of membranes or filters · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01M8/0687 |
| Official title | {Reactant purification by the use of membranes or filters} |
| Display label | Reactant purification by the use of membranes or filters |
| Total patents | 326 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 31 |
| 2016 | 38 |
| 2017 | 40 |
| 2018 | 29 |
| 2019 | 25 |
| 2020 | 33 |
| 2021 | 18 |
| 2022 | 30 |
| 2023 | 19 |
| 2024 | 22 |
| 2025 | 35 |
| 2026 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fluid control valve
US-2016365587-A1 · Dec 15, 2016 · US
Fuel cell system ion exchanger
US-9515339-B2 · Dec 6, 2016 · US
Integrated electrical power and chemical production using fuel cells
US-2016351931-A1 · Dec 1, 2016 · US
Hydrogen purification systems for pem fuel cells
US-2016340188-A1 · Nov 24, 2016 · US
High and rapid hydrogen release from thermolysis of ammonia borane near PEM fuel cell operating temperature
US-9493349-B2 · Nov 15, 2016 · US
Metal air battery having air purification module, electrochemical cell having air purification module and method of operating metal air battery
US-2016322686-A1 · Nov 3, 2016 · US
Air intake device for fuel cell vehicle
US-9466849-B2 · Oct 11, 2016 · US
Filtering device, in particular for the air to be supplied to a fuel cell
US-9466850-B2 · Oct 11, 2016 · US
Integration of Molten Carbonate Fuel Cells in Fischer-Tropsch Synthesis
US-2016293985-A1 · Oct 6, 2016 · US
Integrated electrical power and chemical production using fuel cells
US-9455463-B2 · Sep 27, 2016 · US
System and method for reducing fuel cell power plant emissions
US-9444110-B2 · Sep 13, 2016 · US
Integrated power generation and chemical production using fuel cells at a reduced electrical efficiency
US-9419295-B2 · Aug 16, 2016 · US
Fuel Cell Supply Including Information Storage Device and Control System
US-2016190621-A1 · Jun 30, 2016 · US
Fuel cell system and method for operating same
US-9379401-B2 · Jun 28, 2016 · US
Apparatus and method for detecting filter contamination of fuel cell
US-2016161457-A1 · Jun 9, 2016 · US
Metal-air battery system including CO2 selective absorber and operating method therefor
US-9362581-B2 · Jun 7, 2016 · US
Integration of molten carbonate fuel cells in a refinery setting
US-9362580-B2 · Jun 7, 2016 · US
Flow battery with two-phase storage
US-9350039-B2 · May 24, 2016 · US
Integration of molten carbonate fuel cells for synthesis of nitrogen compounds
US-9343763-B2 · May 17, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01M8/0687?
- CPC H01M8/0687 is the Cooperative Patent Classification code for “Reactant purification by the use of membranes or filters.”
- How many patents are filed under CPC H01M8/0687 (Reactant purification by the use of membranes or filters)?
- Our database includes 326 publications tagged with this CPC code.
- Is patent activity under CPC H01M8/0687 growing?
- Publication counts under this code: 22 in 2024 vs 35 in 2025 (latest complete years).