Co2 electroreduction to multi-carbon products in strong acid
US-2024093390-A1 · Mar 21, 2024 · US
Carbon monoxide or syngas
Carbon monoxide or syngas · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C25B1/23 |
| Official title | Carbon monoxide or syngas |
| Display label | Carbon monoxide or syngas |
| Total patents | 607 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 9 |
| 2016 | 12 |
| 2017 | 11 |
| 2018 | 14 |
| 2019 | 12 |
| 2020 | 27 |
| 2021 | 49 |
| 2022 | 69 |
| 2023 | 88 |
| 2024 | 133 |
| 2025 | 145 |
| 2026 | 38 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Multi-compartment hybrid CO2 electrochemical reducer and hydrogen fuel cell
US-2024076783-A1 · Mar 7, 2024 · US
MULTI-CELL COx ELECTROLYZER STACKS
US-2024060194-A1 · Feb 22, 2024 · US
Purification process for production of ultra high purity carbon monoxide
US-2019390901-A1 · Dec 26, 2019 · US
Methods and systems for syngas production and for efficient, flexible energy generation
US-2019376190-A1 · Dec 12, 2019 · US
Process for producing CO from CO2 in a solid oxide electrolysis cell
US-10494728-B2 · Dec 3, 2019 · US
Electrolysis Cell or Electrode Plate with a Gas Diffusion Electrode
US-2019292669-A1 · Sep 26, 2019 · US
Metal hollow fiber electrode
US-2019271089-A1 · Sep 5, 2019 · US
System and Method for the Electrolysis of Carbon Dioxide
US-2019256988-A1 · Aug 22, 2019 · US
Process for improving carbon conversion efficiency
US-2019249315-A1 · Aug 15, 2019 · US
System and Method for the Electrolysis of Carbon Dioxide
US-2019233958-A1 · Aug 1, 2019 · US
Integrated fermentation and electrolysis process
US-10358662-B2 · Jul 23, 2019 · US
Process for starting mode or stand-by mode operation of a power-to-gas unit comprising a plurality of high-temperature electrolysis (soec) or co-electrolysis reactors
US-2019194816-A1 · Jun 27, 2019 · US
Carbon dioxide electrolytic device and method of electrolyzing carbon dioxide
US-2019085477-A1 · Mar 21, 2019 · US
Electrochemical production of synthesis gas from carbon dioxide
US-10119196-B2 · Nov 6, 2018 · US
Chemical reaction system
US-2018264429-A1 · Sep 20, 2018 · US
Chemical reaction system
US-2018257057-A1 · Sep 13, 2018 · US
Photo-electrochemical cell, manufacturing method of photo-electrochemical cell, and photo-electrochemical reaction device
US-10062520-B2 · Aug 28, 2018 · US
Core shell
US-2018214945-A1 · Aug 2, 2018 · US
Tube cell-based pressure-type coelectolysis modude
US-2018209052-A1 · Jul 26, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C25B1/23?
- CPC C25B1/23 is the Cooperative Patent Classification code for “Carbon monoxide or syngas.”
- How many patents are filed under CPC C25B1/23 (Carbon monoxide or syngas)?
- Our database includes 607 publications tagged with this CPC code.
- Is patent activity under CPC C25B1/23 growing?
- Publication counts under this code: 133 in 2024 vs 145 in 2025 (latest complete years).