Carbon-platinum core-shell type catalysts for fuel cells and method for preparing the same
US-2018309137-A1 · Oct 25, 2018 · US
Compounds thereof with non-metallic elements
Compounds thereof with non-metallic elements · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01M4/923 |
| Official title | {Compounds thereof with non-metallic elements} |
| Display label | Compounds thereof with non-metallic elements |
| Total patents | 179 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 16 |
| 2016 | 25 |
| 2017 | 12 |
| 2018 | 13 |
| 2019 | 14 |
| 2020 | 16 |
| 2021 | 23 |
| 2022 | 19 |
| 2023 | 16 |
| 2024 | 9 |
| 2025 | 15 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for producing fuel cell electrode
US-10090532-B2 · Oct 2, 2018 · US
An Apparatus for Detecting Carbon Monoxide
US-2018172652-A1 · Jun 21, 2018 · US
Positive electrode for lithium-air battery and method for preparing the same
US-9954231-B2 · Apr 24, 2018 · US
Electrocatalyst and fuel cell employing the same
US-2018034065-A1 · Feb 1, 2018 · US
Nitride stabilized core/shell nanoparticles
US-9882222-B2 · Jan 30, 2018 · US
Fuel cell electrode having non-ionomer proton-conducting material
US-9871256-B2 · Jan 16, 2018 · US
Electrode for electrochemical measurement, electrolysis cell for electrochemical measurement, analyzer for electrochemical measurement, and methods for producing same
US-9829458-B2 · Nov 28, 2017 · US
Solid polymer electrolyte fuel cell with improved voltage reversal tolerance
US-2017309924-A1 · Oct 26, 2017 · US
Polymer electrolyte membrane fuel cell including complex catalyst and method for producing the complex catalyst
US-9799904-B2 · Oct 24, 2017 · US
Iridium complexes for electrocatalysis
US-9790605-B2 · Oct 17, 2017 · US
Catalyst particles, carbon-supported catalyst particles and fuel cell catalysts, and methods of manufacturing such catalyst particles and carbon-supported catalyst particles
US-2017282171-A1 · Oct 5, 2017 · US
Method of enhancing electrodes
US-9722257-B2 · Aug 1, 2017 · US
Metal-carbon hybrid composite having nitrogen-doped carbon surface and method for manufacturing the same
US-9700877-B2 · Jul 11, 2017 · US
Catalyst support particle structures
US-9698428-B2 · Jul 4, 2017 · US
Method for producing fine catalyst particles and method for producing carbon-supported catalyst
US-2017117554-A1 · Apr 27, 2017 · US
Thin film catalytic material for use in fuel
US-9577269-B2 · Feb 21, 2017 · US
Lithium-oxygen batteries incorporating lithium superoxide
US-9553316-B2 · Jan 24, 2017 · US
Electrocatalyst for fuel cells and method for producing said electrocatalyst
US-9548498-B2 · Jan 17, 2017 · US
Rapid synthesis of fuel cell catalyst using controlled microwave heating
US-9504999-B2 · Nov 29, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01M4/923?
- CPC H01M4/923 is the Cooperative Patent Classification code for “Compounds thereof with non-metallic elements.”
- How many patents are filed under CPC H01M4/923 (Compounds thereof with non-metallic elements)?
- Our database includes 179 publications tagged with this CPC code.
- Is patent activity under CPC H01M4/923 growing?
- Publication counts under this code: 9 in 2024 vs 15 in 2025 (latest complete years).