Method of making a nonwoven fiber web, nonwoven fiber web, and multi-component fiber
US-12000071-B2 · Jun 4, 2024 · US
Polyvinyl alcohol
Polyvinyl alcohol · 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 | D04H1/4309 |
| Official title | Polyvinyl alcohol |
| Display label | Polyvinyl alcohol |
| Total patents | 119 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2017 | 1 |
| 2018 | 9 |
| 2019 | 8 |
| 2020 | 11 |
| 2021 | 9 |
| 2022 | 30 |
| 2023 | 18 |
| 2024 | 13 |
| 2025 | 11 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Fabrication of tragacanthin-PVA nanofibrous webs and applications thereof in water-absorbent filters
US-11896920-B2 · Feb 13, 2024 · US
Protective film for lithium electrode and lithium electrode for lithium secondary battery comprising same
US-2022399546-A1 · Dec 15, 2022 · US
Nonwoven water-soluble composite structure
US-2022388269-A1 · Dec 8, 2022 · US
Water-dispersible article including water-dispersible core construction
US-2022356642-A1 · Nov 10, 2022 · US
Fibrous structure-containing articles that exhibit consumer relevant properties
US-2022274373-A1 · Sep 1, 2022 · US
Fibrous structure-containing articles that exhibit consumer relevant properties
US-2022266569-A1 · Aug 25, 2022 · US
Electronic functional member, method for manufacturing same, and biological measurement sensor
US-2022240826-A1 · Aug 4, 2022 · US
Nonwoven water dispersible article for unit dose packaging
US-2022228305-A1 · Jul 21, 2022 · US
Fibrous structure-containing articles that exhibit consumer relevant properties
US-2022219427-A1 · Jul 14, 2022 · US
Absorbent and resilient fibrous structures
US-11338544-B2 · May 24, 2022 · US
Fibrous structure-containing articles that exhibit consumer relevant properties
US-11285690-B2 · Mar 29, 2022 · US
Fibrous Structures Including an Active Agent and Having a Graphic Printed Thereon
US-2022090321-A1 · Mar 24, 2022 · US
Water soluble fibers with post process modifications and articles containing same
US-2022074130-A1 · Mar 10, 2022 · US
Fibrous structure-containing articles that exhibit consumer relevant properties
US-11235551-B2 · Feb 1, 2022 · US
Nonwoven web with highly detailed and functionally advantageous bond pattern
US-2021363676-A1 · Nov 25, 2021 · US
Fibrous elements comprising fast ettnig surfactants and methods for making same
US-11118033-B2 · Sep 14, 2021 · US
Polyvinyl alcohol/sodium alginate/hydroxyapatite composite fibrous membrane, and preparation method and application thereof
US-2021205491-A1 · Jul 8, 2021 · US
Artificial cornea and method for manufacturing the artificial cornea
US-11045308-B2 · Jun 29, 2021 · US
Composite materials in wound treatment
US-2021138103-A1 · May 13, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC D04H1/4309?
- CPC D04H1/4309 is the Cooperative Patent Classification code for “Polyvinyl alcohol.”
- How many patents are filed under CPC D04H1/4309 (Polyvinyl alcohol)?
- Our database includes 119 publications tagged with this CPC code.
- Is patent activity under CPC D04H1/4309 growing?
- Publication counts under this code: 13 in 2024 vs 11 in 2025 (latest complete years).