Polyolefin photovoltaic backsheet comprising a stabilized polypropylene layer
US-11898023-B2 · Feb 13, 2024 · US
Five-membered rings
Five-membered rings · 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 | C08K5/3472 |
| Official title | Five-membered rings |
| Display label | Five-membered rings |
| Total patents | 173 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 17 |
| 2016 | 7 |
| 2017 | 11 |
| 2018 | 12 |
| 2019 | 15 |
| 2020 | 24 |
| 2021 | 23 |
| 2022 | 10 |
| 2023 | 15 |
| 2024 | 17 |
| 2025 | 19 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for preparing graft copolymer complex, graft copolymer complex, and thermoplastic resin composition comprising graft copolymer complex
US-2019382575-A1 · Dec 19, 2019 · US
Ultraviolet protective transparency
US-2019375198-A1 · Dec 12, 2019 · US
Thermoplastic resin composition and article manufactured using the same
US-10472510-B2 · Nov 12, 2019 · US
Ionic polymers comprising fluorescent or colored reporter groups
US-2019300716-A1 · Oct 3, 2019 · US
Process for preparing high-reactivity isobutene homo- or copolymers
US-2019284313-A1 · Sep 19, 2019 · US
Coating compositions comprising diisocyanate chain extended bisaspartates
US-10385231-B2 · Aug 20, 2019 · US
Thermoplastic resin composition including compound having functional group that intermolecularly forms at least two or more hydrogen bonds
US-2019249006-A1 · Aug 15, 2019 · US
Non-migratory internal plasticizers attached to a pendant covalent linkage
US-2019241727-A1 · Aug 8, 2019 · US
Method for imparting water repellency to substrate, surface treatment agent, and method for suppressing collapse of organic pattern or inorganic pattern in cleaning substrate surface with cleaning liquid
US-2019203090-A1 · Jul 4, 2019 · US
Hyaluronic acid conjugates and uses thereof
US-2019119486-A1 · Apr 25, 2019 · US
Polymer-containing composition and antifouling coating composition
US-2019100660-A1 · Apr 4, 2019 · US
Power cable having an aluminum corrosion inhibitor
US-10217546-B2 · Feb 26, 2019 · US
Protective sheet, image display device, spectacle lens, and spectacles
US-2018371255-A1 · Dec 27, 2018 · US
Polycarbonate resin composition
US-10150854-B2 · Dec 11, 2018 · US
Polymeric Matrices with Ionic Additives
US-2018282519-A1 · Oct 4, 2018 · US
Metal particle-chitin composite materials and methods of making thereof
US-2018273710-A1 · Sep 27, 2018 · US
Power cable comprising an aluminium corrosion inhibitor
US-2018254123-A1 · Sep 6, 2018 · US
Triazole compound
US-2018203175-A1 · Jul 19, 2018 · US
Thermoplastic Resin Composition and Article Manufactured Using the Same
US-2018186989-A1 · Jul 5, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08K5/3472?
- CPC C08K5/3472 is the Cooperative Patent Classification code for “Five-membered rings.”
- How many patents are filed under CPC C08K5/3472 (Five-membered rings)?
- Our database includes 173 publications tagged with this CPC code.
- Is patent activity under CPC C08K5/3472 growing?
- Publication counts under this code: 17 in 2024 vs 19 in 2025 (latest complete years).