Conductive nonwoven fabric, and method for manufacturing conductive nonwoven fabric
US-2023411037-A1 · Dec 21, 2023 · US
Aromatic polyamides
Aromatic 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 | D04H1/4342 |
| Official title | Aromatic polyamides |
| Display label | Aromatic polyamides |
| Total patents | 69 |
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 | 12 |
| 2016 | 4 |
| 2017 | 4 |
| 2018 | 3 |
| 2019 | 7 |
| 2020 | 11 |
| 2021 | 8 |
| 2022 | 6 |
| 2023 | 6 |
| 2024 | 4 |
| 2025 | 1 |
| 2026 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Systems, devices, and methods of enhancing carbon fiber dispersion in wet-laid nonwovens
US-11802357-B2 · Oct 31, 2023 · US
Aramid-based paper with improved properties
US-11686048-B2 · Jun 27, 2023 · US
Nonwoven fabric sheet
US-11618240-B2 · Apr 4, 2023 · US
Separator for lithium ion secondary batteries, and lithium ion secondary battery
US-2023089405-A1 · Mar 23, 2023 · US
Process for the manufacture of a fiber comprising meta-aramid
US-2022380939-A1 · Dec 1, 2022 · US
Synthetic leather and coated article
US-2022220666-A1 · Jul 14, 2022 · US
Synthetic leather and covered article
US-2022205168-A1 · Jun 30, 2022 · US
Flame-retardant fiber composite and flame-retardant working clothes
US-2022167700-A1 · Jun 2, 2022 · US
Composites of polymeric ultrafine fibers and shear-thickening fluids
US-2022154391-A1 · May 19, 2022 · US
Method for producing heat-resistant resin composite and heatresistant resin composite
US-2022033595-A1 · Feb 3, 2022 · US
Random mat and fiber-reinforced composite material shaped product
US-11168186-B2 · Nov 9, 2021 · US
Aramid paper suitable for use in electronic applications
US-11111632-B2 · Sep 7, 2021 · US
Scouring article with mixture of abrasive particles
US-2021212544-A1 · Jul 15, 2021 · US
Carbon fiber random mat and carbon fiber composite material
US-11053363-B2 · Jul 6, 2021 · US
Aramid-based paper with improved properties
US-2021140108-A1 · May 13, 2021 · US
Method of producing a polymer nanofiber sheet
US-10968315-B2 · Apr 6, 2021 · US
Nonwoven fabric
US-2021010175-A1 · Jan 14, 2021 · US
Nonwoven fabric sheet
US-2021001596-A1 · Jan 7, 2021 · US
Non woven fabric
US-2020392657-A1 · Dec 17, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC D04H1/4342?
- CPC D04H1/4342 is the Cooperative Patent Classification code for “Aromatic polyamides.”
- How many patents are filed under CPC D04H1/4342 (Aromatic polyamides)?
- Our database includes 69 publications tagged with this CPC code.
- Is patent activity under CPC D04H1/4342 growing?
- Publication counts under this code: 4 in 2024 vs 1 in 2025 (latest complete years).