Aldehyde-ketone polymer, electrode plate and related battery cell, battery and electrical device
US-2025391907-A1 · Dec 25, 2025 · US
Cyclic ethers having four or more ring atoms
Cyclic ethers having four or more ring atoms · 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 | C08G65/16 |
| Official title | Cyclic ethers having four or more ring atoms |
| Display label | Cyclic ethers having four or more ring atoms |
| Total patents | 43 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 5 |
| 2017 | 2 |
| 2018 | 4 |
| 2019 | 5 |
| 2020 | 5 |
| 2021 | 3 |
| 2022 | 4 |
| 2023 | 3 |
| 2024 | 4 |
| 2025 | 5 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for the production of a colored polyoxymethylene copolymer
US-12486358-B2 · Dec 2, 2025 · US
Draw solute, draw solution, and water treatment device
US-12434190-B2 · Oct 7, 2025 · US
Polyalkylene glycol compound
US-12384882-B2 · Aug 12, 2025 · US
Powdery material for 3d printer, three-dimensional shaped object, and production method therefor
US-2025019549-A1 · Jan 16, 2025 · US
Organyloxysilyl-terminated polymers on the basis of 1,3-dioxolane copolymer building blocks
US-2024317935-A1 · Sep 26, 2024 · US
Polyol composition comprising anhydrosugar alcohols and anhydrosugar alcohol polymer
US-12049535-B2 · Jul 30, 2024 · US
Poly(cyclic acetal)s, methods of making same, and uses thereof
US-2024117115-A1 · Apr 11, 2024 · US
Preparation of poly(crown ether)s
US-2024110007-A1 · Apr 4, 2024 · US
Anisotropic copoly(imide oxetane) coatings and articles of manufacture, copoly(imide oxetane)s containing pendant fluorocarbon moieties, oligomers and processes therefor
US-11760738-B2 · Sep 19, 2023 · US
Materials exhibiting biomimetic carbon fixation and self-repair
US-11739041-B2 · Aug 29, 2023 · US
Draw Solute, Draw Solution, and Water Treatment Device
US-2023149854-A1 · May 18, 2023 · US
Polyol composition comprising anhydrosugar alcohols and anhydrosugar alcohol polymer
US-2022177636-A1 · Jun 9, 2022 · US
Polyetherpolyol with Low Content of Cyclic Oligomers
US-2022135739-A1 · May 5, 2022 · US
Polyalkylene glycol compound
US-2022081513-A1 · Mar 17, 2022 · US
Materials exhibiting biomimetic carbon fixation and self-repair
US-2022081383-A1 · Mar 17, 2022 · US
Materials exhibiting biomimetic carbon fixation and self-repair
US-11155509-B2 · Oct 26, 2021 · US
Anisotropic copoly(imide oxetane) coatings and articles of manufacture, copoly(imide oxetane)s containing pendant fluorocarbon moieties, oligomers and processes therefor
US-11130742-B2 · Sep 28, 2021 · US
Method for the production of a colored polyoxymethylene copolymer
US-2021214494-A1 · Jul 15, 2021 · US
Modified vinyl alcohol-based polymer, and dispersion stabilizer for suspension polymerization
US-10836843-B2 · Nov 17, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08G65/16?
- CPC C08G65/16 is the Cooperative Patent Classification code for “Cyclic ethers having four or more ring atoms.”
- How many patents are filed under CPC C08G65/16 (Cyclic ethers having four or more ring atoms)?
- Our database includes 43 publications tagged with this CPC code.
- Is patent activity under CPC C08G65/16 growing?
- Publication counts under this code: 4 in 2024 vs 5 in 2025 (latest complete years).