Process for the preparation of alkoxylated 2,5-dihydrofuran
US-2025353823-A1 · Nov 20, 2025 · US
Heterocyclic compounds
Heterocyclic compounds · 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 | C25B3/05 |
| Official title | Heterocyclic compounds |
| Display label | Heterocyclic compounds |
| Total patents | 84 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 2 |
| 2017 | 2 |
| 2018 | 3 |
| 2019 | 2 |
| 2020 | 4 |
| 2021 | 12 |
| 2022 | 10 |
| 2023 | 9 |
| 2024 | 10 |
| 2025 | 17 |
| 2026 | 8 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Electrochemical oxidation of organic molecules
US-12180601-B2 · Dec 31, 2024 · US
Method for producing cyclic oligosaccharide, cyclic oligosaccharide and inclusion agent
US-2024400723-A1 · Dec 5, 2024 · US
Oxidative preparation of maleic acid
US-12145905-B2 · Nov 19, 2024 · US
Continuous production system for 2,5-furandicarboxylic acid and continuous production method for 2,5-furandicarboxylic acid
US-2024368101-A1 · Nov 7, 2024 · US
Electrochemical target species capture with a redox-active amine
US-2024307819-A1 · Sep 19, 2024 · US
Electrochemical modulation of the flammability of ionic liquid fuels
US-2024279822-A1 · Aug 22, 2024 · US
Energy utilization system and method for producing carbon-containing material
US-2024229268-A1 · Jul 11, 2024 · US
Apparatus for manufacturing nitrogen-containing compound and method for manufacturing nitrogen-containing compound
US-2024209520-A1 · Jun 27, 2024 · US
Stirring-free scalable electrosynthesis enabled by alternating current
US-2024167176-A1 · May 23, 2024 · US
Oxidation of 5-hydroxy-2-furanone to maleates
US-11912656-B2 · Feb 27, 2024 · US
Reductive dimerization of furfural via a continuous process
US-2023416214-A1 · Dec 28, 2023 · US
Alternating current (ac) transition-metal catalysis
US-2023407492-A1 · Dec 21, 2023 · US
Electroreductive cross coupling
US-2023250539-A1 · Aug 10, 2023 · US
Anodic oxidation of 5-aminouracil
US-11708336-B2 · Jul 25, 2023 · US
Linker structures with minimal scar for enzymatic synthesis
US-2023151047-A1 · May 18, 2023 · US
Electrosynthesis of oxiranes
US-2023146508-A1 · May 11, 2023 · US
Metal-phosphorized catalyst for producing 2,5-furandicarboxylic acid and method for producing 2,5-furandicarboxylic acid using the same
US-2023136651-A1 · May 4, 2023 · US
Alternating current electrolysis for use in organic synthesis
US-2023091947-A1 · Mar 23, 2023 · US
Linker structures with minimal scar for enzymatic synthesis
US-11591361-B2 · Feb 28, 2023 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C25B3/05?
- CPC C25B3/05 is the Cooperative Patent Classification code for “Heterocyclic compounds.”
- How many patents are filed under CPC C25B3/05 (Heterocyclic compounds)?
- Our database includes 84 publications tagged with this CPC code.
- Is patent activity under CPC C25B3/05 growing?
- Publication counts under this code: 10 in 2024 vs 17 in 2025 (latest complete years).