Epoxy composition comprising a bio-based epoxy compound
US-12590207-B2 · Mar 31, 2026 · US
Heterocyclic compounds having oxygen in the ring
Heterocyclic compounds having oxygen in the ring · 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 | C08K5/15 |
| Official title | Heterocyclic compounds having oxygen in the ring |
| Display label | Heterocyclic compounds having oxygen in the ring |
| Total patents | 42 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 4 |
| 2017 | 3 |
| 2018 | 4 |
| 2019 | 8 |
| 2020 | 4 |
| 2021 | 3 |
| 2022 | 3 |
| 2023 | 4 |
| 2024 | 2 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Epoxy resin composition, cured product, encapsulant and adhesive
US-2025034319-A1 · Jan 30, 2025 · US
Tyre for vehicle wheels
US-11999193-B2 · Jun 4, 2024 · US
Thermally stable cellulose ester compositions and articles made using these compositions
US-11976138-B2 · May 7, 2024 · US
Epoxy composition comprising a bio-based epoxy compound
US-2023312911-A1 · Oct 5, 2023 · US
Polymer-based resin compositions derived from cellulose and articles made using these compositions
US-11655309-B2 · May 23, 2023 · US
Polyester composites and their preparation methods
US-11591465-B2 · Feb 28, 2023 · US
Tyre for vehicle wheels
US-2023045260-A1 · Feb 9, 2023 · US
Tyre for vehicle wheels
US-11518192-B2 · Dec 6, 2022 · US
Semi-crystalline polyolefin-based additive masterbatch composition
US-11370891-B2 · Jun 28, 2022 · US
Curable composition
US-11306160-B2 · Apr 19, 2022 · US
Polyrotaxane composite formed body and production method therefor
US-2021379877-A1 · Dec 9, 2021 · US
Semi-crystalline polyolefin-based additive masterbatch composition
US-11186711-B2 · Nov 30, 2021 · US
Polymer-based resin compositions derived from cellulose and articles made using these compositions
US-10919984-B2 · Feb 16, 2021 · US
Polyester Composites and Their Preparation Methods
US-2020325328-A1 · Oct 15, 2020 · US
Soft contact lenses with a lubricious coating covalently-attached thereon
US-10782450-B2 · Sep 22, 2020 · US
Curable composition
US-2020291157-A1 · Sep 17, 2020 · US
Photodegradation-resistant biodegradable films
US-10774197-B2 · Sep 15, 2020 · US
Tyre for vehicle wheels
US-2019381832-A1 · Dec 19, 2019 · US
Polymer-based resin compositions derived from cellulose and articles made using these compositions
US-2019359793-A1 · Nov 28, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08K5/15?
- CPC C08K5/15 is the Cooperative Patent Classification code for “Heterocyclic compounds having oxygen in the ring.”
- How many patents are filed under CPC C08K5/15 (Heterocyclic compounds having oxygen in the ring)?
- Our database includes 42 publications tagged with this CPC code.
- Is patent activity under CPC C08K5/15 growing?
- Publication counts under this code: 2 in 2024 vs 1 in 2025 (latest complete years).