Electrostatically charged porous nonwoven web, membrane and mask derived therefrom and methods for manufacture and cleaning
US-12589364-B2 · Mar 31, 2026 · US
Fluorine series
Fluorine series · 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 | D04H1/4318 |
| Official title | Fluorine series |
| Display label | Fluorine series |
| Total patents | 56 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 5 |
| 2017 | 4 |
| 2018 | 5 |
| 2019 | 3 |
| 2020 | 6 |
| 2021 | 4 |
| 2022 | 6 |
| 2023 | 6 |
| 2024 | 5 |
| 2025 | 9 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Electrospun film, method for manufacturing the same and use of such electrospun film
US-12509799-B2 · Dec 30, 2025 · US
Microfluidic device and production method therefor
US-2025332589-A1 · Oct 30, 2025 · US
Porous ptfe membrane
US-2025303330-A1 · Oct 2, 2025 · US
Air filter medium, air filter pack, and air filter unit
US-12427459-B2 · Sep 30, 2025 · US
Porous PTFE membrane
US-12318722-B2 · Jun 3, 2025 · US
High transmission air filtration media and transparent face mask
US-2025065253-A1 · Feb 27, 2025 · US
Method for manufacturing thermally adhesive fiber web and thermally adhesive fiber web produced thereby
US-2025066962-A1 · Feb 27, 2025 · US
Method for preparing polymer film and polymer film prepared by the method
US-2025011554-A1 · Jan 9, 2025 · US
Air filter medium, air filter pack, and air filter unit
US-2025001339-A1 · Jan 2, 2025 · US
Method for producing fiber articles
US-12180627-B2 · Dec 31, 2024 · US
Fiber article
US-12104300-B2 · Oct 1, 2024 · US
Composite fiber inks and electrodes and applications of same
US-2024304779-A1 · Sep 12, 2024 · US
Biomimetic, nanofiber-based and directional moisture-wicking electronic skins and fabrication methods thereof
US-2024260899-A1 · Aug 8, 2024 · US
Hollow fiber membrane and manufacturing method therefor
US-2024216871-A1 · Jul 4, 2024 · US
Laminated acoustic absorption member
US-11801660-B2 · Oct 31, 2023 · US
Electrospun film, method for manufacturing the same and use of such electrospun film
US-2023304191-A1 · Sep 28, 2023 · US
Electrostatically charged porous nonwoven web, membrane and mask derived therefrom and methods for manufacture and cleaning
US-2023226501-A1 · Jul 20, 2023 · US
Hydrophilic Fluororesin Tube and Method for Manufacturing Hydrophilic Fluororesin Tube
US-2023119794-A1 · Apr 20, 2023 · US
Medical use venting filter
US-2023100527-A1 · Mar 30, 2023 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC D04H1/4318?
- CPC D04H1/4318 is the Cooperative Patent Classification code for “Fluorine series.”
- How many patents are filed under CPC D04H1/4318 (Fluorine series)?
- Our database includes 56 publications tagged with this CPC code.
- Is patent activity under CPC D04H1/4318 growing?
- Publication counts under this code: 5 in 2024 vs 9 in 2025 (latest complete years).