Composite nonwoven fabric and article comprising same
US-12415150-B2 · Sep 16, 2025 · US
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Polyamides
Polyamides · Cooperative Patent Classification (CPC)
Textile and paper production, treatment, and products.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | D04H1/549 |
| Official title | Polyamides |
| Display label | Polyamides |
| Total patents | 21 |
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 | 1 |
| 2019 | 2 |
| 2020 | 2 |
| 2021 | 6 |
| 2022 | 4 |
| 2023 | 1 |
| 2024 | 3 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Polyamide-imide resin, polyamide-imide fiber, nonwoven fabric, and separator for electronic component
US-2025183478-A1 · Jun 5, 2025 · US
Nonwoven fabric for skin care products, face mask, and cleansing sheet
US-12171846-B2 · Dec 24, 2024 · US
Space filling material and space filling structure, and methods for using those
US-12109742-B2 · Oct 8, 2024 · US
Functional nonwoven scrim for high temperature applications requiring low flammability, smoke, and toxicity
US-11905633-B2 · Feb 20, 2024 · US
Composite nonwoven fabric and article comprising same
US-2023140087-A1 · May 4, 2023 · US
Paper machine clothing and method
US-2022275580-A1 · Sep 1, 2022 · US
Dermal patch
US-2022241115-A1 · Aug 4, 2022 · US
Shock Pad for Synthetic Turf and Methods for Making Same
US-2022049435-A1 · Feb 17, 2022 · US
Nonwoven fabric for skin care products, face mask, and cleansing sheet
US-2022040050-A1 · Feb 10, 2022 · US
Space filling material and space filling structure, and methods for using those
US-2021394406-A1 · Dec 23, 2021 · US
Functional nonwoven scrim for high temperature applications requiring low flammability, smoke, and toxicity
US-2021301436-A1 · Sep 30, 2021 · US
Shock pad for synthetic turf and methods for making same
US-11131068-B2 · Sep 28, 2021 · US
Aramid paper suitable for use in electronic applications
US-11111632-B2 · Sep 7, 2021 · US
Efficient low-resistance micro-nano-fiber microscopic gradient structure filtration material, and preparation method therefor
US-2021154606-A1 · May 27, 2021 · US
Fabric for fusion bonding and multilayer body comprising said fabric for fusion bonding
US-2021094257-A1 · Apr 1, 2021 · US
High load bearing capacity nylon staple fibers with additive, and blended yarns and fabrics thereof
US-2020283933-A1 · Sep 10, 2020 · US
Shock Pad for Synthetic Turf and Methods for Making Same
US-2020224373-A1 · Jul 16, 2020 · US
Aramid paper suitable for use in electronic applications
US-2019376237-A1 · Dec 12, 2019 · US
Shock Pad for Synthetic Turf and Methods for Making Same
US-2019301107-A1 · Oct 3, 2019 · US