Massively parallel DNA sequencing apparatus
US-11448639-B2 · Sep 20, 2022 · US
Non-porous diffusion electrodes, e.g. palladium membranes, ion exchange membranes
Non-porous diffusion electrodes, e.g. palladium membranes, ion exchange membranes · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01M4/94 |
| Official title | Non-porous diffusion electrodes, e.g. palladium membranes, ion exchange membranes |
| Display label | Non-porous diffusion electrodes, e.g. palladium membranes, ion exchange membranes |
| Total patents | 76 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 6 |
| 2017 | 12 |
| 2018 | 6 |
| 2019 | 6 |
| 2020 | 15 |
| 2021 | 8 |
| 2022 | 8 |
| 2023 | 4 |
| 2024 | 5 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Proton conductor and fuel cell
US-2022181663-A1 · Jun 9, 2022 · US
Hydrogen-based battery
US-2021399327-A1 · Dec 23, 2021 · US
Proton ceramics fuel cell and method for production of same
US-11196073-B2 · Dec 7, 2021 · US
Anion exchange polymers and anion exchange membranes incorporating same
US-11173456-B2 · Nov 16, 2021 · US
Dynamic piezocatalyst system
US-2021218034-A1 · Jul 15, 2021 · US
Massively parallel dna sequencing apparatus
US-2021109081-A1 · Apr 15, 2021 · US
Battery body unit for redox flow battery, redox flow battery using same, and method for operating redox flow battery
US-2021083305-A1 · Mar 18, 2021 · US
Catalyst
US-2021066724-A1 · Mar 4, 2021 · US
Proton ceramics fuel cell and method for production of same
US-2021043957-A1 · Feb 11, 2021 · US
Electrode for redox flow battery, and redox flow battery
US-2020350597-A1 · Nov 5, 2020 · US
Apparatus and method for the non-destructive measurement of hydrogen diffusivity
US-10809241-B2 · Oct 20, 2020 · US
Preparation method for alkaline anion exchange membrane and use thereof in fuel cell
US-10797333-B2 · Oct 6, 2020 · US
Bis-phenanthroline iron macrocycle complex for oxygen reduction reaction
US-2020291052-A1 · Sep 17, 2020 · US
Fuel cell assembly and method for operating a fuel cell assembly
US-10741866-B2 · Aug 11, 2020 · US
Apparatus and method for the non-destructive measurement of hydrogen diffusivity
US-10732163-B2 · Aug 4, 2020 · US
Zinc electrodes for batteries
US-10720635-B2 · Jul 21, 2020 · US
Massively parallel DNA sequencing apparatus
US-10712334-B2 · Jul 14, 2020 · US
Redox flow battery
US-10707514-B2 · Jul 7, 2020 · US
Apparatus and method for the non-destructive measurement of hydrogen diffusivity
US-2020200727-A1 · Jun 25, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01M4/94?
- CPC H01M4/94 is the Cooperative Patent Classification code for “Non-porous diffusion electrodes, e.g. palladium membranes, ion exchange membranes.”
- How many patents are filed under CPC H01M4/94 (Non-porous diffusion electrodes, e.g. palladium membranes, ion exchange membranes)?
- Our database includes 76 publications tagged with this CPC code.
- Is patent activity under CPC H01M4/94 growing?
- Publication counts under this code: 5 in 2024 vs 1 in 2025 (latest complete years).