Composites for reducing noise
US-12466941-B2 · Nov 11, 2025 · US
Polyamides
Polyamides · 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 | C04B26/20 |
| Official title | Polyamides |
| Display label | Polyamides |
| Total patents | 36 |
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 | 3 |
| 2016 | 4 |
| 2017 | 8 |
| 2018 | 3 |
| 2019 | 3 |
| 2020 | 4 |
| 2021 | 3 |
| 2022 | 3 |
| 2023 | 4 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Emulsion compositions for priming a pavement surface
US-11807759-B2 · Nov 7, 2023 · US
Self-healing polymer-modified cements for ambient temperature applications
US-2023109371-A1 · Apr 6, 2023 · US
Wall compounds and methods of use
US-11618712-B2 · Apr 4, 2023 · US
Chemical products for adhesive applications
US-11578242-B2 · Feb 14, 2023 · US
Chemical products for adhesive applications
US-11492522-B2 · Nov 8, 2022 · US
Wall compounds and methods of use
US-2022169568-A1 · Jun 2, 2022 · US
Wall compounds and methods of use
US-11267758-B2 · Mar 8, 2022 · US
Decorative item made of a heavy composite material
US-11042125-B2 · Jun 22, 2021 · US
Composites for reducing noise
US-2021163727-A1 · Jun 3, 2021 · US
Emulsion compositions for priming a pavement surface
US-2021071002-A1 · Mar 11, 2021 · US
Mineral fibre insulation
US-2020300480-A1 · Sep 24, 2020 · US
Wall compounds and methods of use
US-2020290927-A1 · Sep 17, 2020 · US
Mineral fibre insulation
US-2020224887-A1 · Jul 16, 2020 · US
Decorative item made of a heavy composite material
US-2020201260-A1 · Jun 25, 2020 · US
Mineral fibre insulation
US-2019316787-A1 · Oct 17, 2019 · US
Mounting pad and method for deterring theft and securing outdoor equipment and appliances against high winds
US-10408493-B1 · Sep 10, 2019 · US
Material sets
US-2019054688-A1 · Feb 21, 2019 · US
Method of producing a composite material using a mixing system
US-10040721-B2 · Aug 7, 2018 · US
Mineral fibre insulation
US-2018080658-A1 · Mar 22, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C04B26/20?
- CPC C04B26/20 is the Cooperative Patent Classification code for “Polyamides.”
- How many patents are filed under CPC C04B26/20 (Polyamides)?
- Our database includes 36 publications tagged with this CPC code.
- Is patent activity under CPC C04B26/20 growing?
- Publication counts under this code: 4 in 2023 vs 1 in 2025 (latest complete years).