Water-based coating composition, and multi-layer coating film
US-12577408-B2 · Mar 17, 2026 · US
Polyesters, esterified polyepoxides
Polyesters, esterified polyepoxides · 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 | C09D5/4423 |
| Official title | {Polyesters, esterified polyepoxides} |
| Display label | Polyesters, esterified polyepoxides |
| Total patents | 27 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2018 | 4 |
| 2019 | 3 |
| 2020 | 7 |
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 1 |
| 2024 | 3 |
| 2025 | 1 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method of improving the corrosion resistance of a metal substrate
US-12546024-B2 · Feb 10, 2026 · US
Direct-to-metal coating composition
US-12480002-B2 · Nov 25, 2025 · US
Direct-to-metal coating composition
US-2024182722-A1 · Jun 6, 2024 · US
Method of improving the corrosion resistance of a metal substrate
US-2024141538-A1 · May 2, 2024 · US
Method of improving the corrosion resistance of a metal substrate
US-11905610-B2 · Feb 20, 2024 · US
Direct-to-metal coating composition
US-11851577-B2 · Dec 26, 2023 · US
Water-based coating composition, and multi-layer coating film
US-2022411643-A1 · Dec 29, 2022 · US
Water-based coating composition, and multi-layer coating film
US-11518890-B2 · Dec 6, 2022 · US
Direct-to-metal composition
US-2021403727-A1 · Dec 30, 2021 · US
Clear composition for alumium foot rest and coating method for aluminium foot rest
US-11091665-B2 · Aug 17, 2021 · US
Method for producing a multi-layered coating
US-2021205845-A1 · Jul 8, 2021 · US
Aqueous Coating Compositions and Processes of Forming Multi-Component Composite Coatings on a Substrate
US-2020332145-A1 · Oct 22, 2020 · US
Coating for applicators in electrosurgery
US-10793726-B2 · Oct 6, 2020 · US
Water-dispersed electrodeposition solution for forming insulating film
US-10781320-B2 · Sep 22, 2020 · US
Method of improving the corrosion resistance of a metal substrate
US-2020270758-A1 · Aug 27, 2020 · US
Method of improving the corrosion resistance of a metal substrate
US-10697081-B2 · Jun 30, 2020 · US
Water-based coating composition, and multi-layer coating film
US-2020032079-A1 · Jan 30, 2020 · US
Electrical devices and components used in electrical systems made with self-healing materials
US-10526495-B2 · Jan 7, 2020 · US
Method of improving the corrosion resistance of a metal substrate
US-2019390358-A1 · Dec 26, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09D5/4423?
- CPC C09D5/4423 is the Cooperative Patent Classification code for “Polyesters, esterified polyepoxides.”
- How many patents are filed under CPC C09D5/4423 (Polyesters, esterified polyepoxides)?
- Our database includes 27 publications tagged with this CPC code.
- Is patent activity under CPC C09D5/4423 growing?
- Publication counts under this code: 3 in 2024 vs 1 in 2025 (latest complete years).