Alloy nanoparticle, aggregate of alloy nanoparticles, catalyst, and method for producing alloy nanoparticles
US-2022258231-A1 · Aug 18, 2022 · US
Unsupported catalytic particles; loose particulate catalytic materials, e.g. in fluidised state
Unsupported catalytic particles; loose particulate catalytic materials, e.g. in fluidised state · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01M4/9091 |
| Official title | {Unsupported catalytic particles; loose particulate catalytic materials, e.g. in fluidised state} |
| Display label | Unsupported catalytic particles; loose particulate catalytic materials, e.g. in fluidised state |
| Total patents | 75 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 9 |
| 2017 | 12 |
| 2018 | 6 |
| 2019 | 6 |
| 2020 | 11 |
| 2021 | 6 |
| 2022 | 8 |
| 2023 | 3 |
| 2024 | 5 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Boron-doped copper catalysts for efficient conversion of CO2 to multi-carbon hydrocarbons and associated methods
US-11390959-B2 · Jul 19, 2022 · US
Carbon catalyst, battery electrode, and battery
US-11387466-B2 · Jul 12, 2022 · US
Bimetallic non-PGM alloys for the electrooxidation of gas fuels in alkaline media
US-11289710-B1 · Mar 29, 2022 · US
Carbon catalyst, cell electrode, and cell
US-11145876-B2 · Oct 12, 2021 · US
Boron-doped copper catalysts for efficient conversion of co2 to multi-carbon hydrocarbons and associated methods
US-2021292924-A1 · Sep 23, 2021 · US
Method of preparing a catalyst for a fuel cell without a carbon support
US-11081703-B2 · Aug 3, 2021 · US
Electrolyte membrane for fuel cells capable of preventing poisoning of catalyst and method of producing the same
US-2021202971-A1 · Jul 1, 2021 · US
Electrolyte membrane for membrane-electrode assemblies containing catalyst having polyhedral framework and method of manufacturing the same
US-2021135244-A1 · May 6, 2021 · US
Carbon catalyst for redox flow battery electrodes
US-10903504-B2 · Jan 26, 2021 · US
Oxygen reduction catalyst
US-2020406241-A1 · Dec 31, 2020 · US
Carbon catalyst, cell electrode, and cell
US-2020243873-A1 · Jul 30, 2020 · US
Nitrogen-containing carbon material and process for producing nitrogen-containing carbon material, and slurry, ink, and electrode for fuel cell
US-10727495-B2 · Jul 28, 2020 · US
Method of preparing a catalyst for a fuel cell without a carbon support
US-2020203735-A1 · Jun 25, 2020 · US
Systems and methods for PTNI nanocages
US-10637072-B2 · Apr 28, 2020 · US
Carbon catalyst, battery electrode, and battery
US-2020127301-A1 · Apr 23, 2020 · US
Flow battery that includes redox mediator
US-10629910-B2 · Apr 21, 2020 · US
Lithium air battery including negative electrode, positive electrode, nonaqueous lithium ion conductor, and copper ion
US-10629970-B2 · Apr 21, 2020 · US
Carbon catalyst, electrode, and battery
US-2020036013-A1 · Jan 30, 2020 · US
Flow battery that includes redox mediator
US-10541435-B2 · Jan 21, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01M4/9091?
- CPC H01M4/9091 is the Cooperative Patent Classification code for “Unsupported catalytic particles; loose particulate catalytic materials, e.g. in fluidised state.”
- How many patents are filed under CPC H01M4/9091 (Unsupported catalytic particles; loose particulate catalytic materials, e.g. in fluidised state)?
- Our database includes 75 publications tagged with this CPC code.
- Is patent activity under CPC H01M4/9091 growing?
- Publication counts under this code: 5 in 2024 vs 3 in 2025 (latest complete years).