Nonwoven water-soluble composite structure
US-12552129-B2 · Feb 17, 2026 · US
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by applying solvents or auxiliary agents
by applying solvents or auxiliary agents · 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 | D04H1/552 |
| Official title | by applying solvents or auxiliary agents |
| Display label | by applying solvents or auxiliary agents |
| Total patents | 23 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2017 | 1 |
| 2018 | 3 |
| 2020 | 7 |
| 2021 | 1 |
| 2022 | 7 |
| 2023 | 2 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Reversible swelling and collapsing the latent pores of natural fiber welded biopolymer by way of solvent treatment to regenerate mesoporous or nonporous biopolymeric structures
US-2025084575-A1 · Mar 13, 2025 · US
Polyamide nanofiber nonwovens
US-11674247-B2 · Jun 13, 2023 · US
Polyamide nanofiber nonwovens for acoustic applications
US-11578438-B2 · Feb 14, 2023 · US
Nonwoven water-soluble composite structure
US-2022388269-A1 · Dec 8, 2022 · US
Polyamide nanofiber nonwovens
US-2022372681-A1 · Nov 24, 2022 · US
Press-Bonded Body and Method for Producing the Same
US-2022282412-A1 · Sep 8, 2022 · US
Fiber sheet and method for manufacturing same
US-11421360-B2 · Aug 23, 2022 · US
Polyamide nanofiber nonwovens
US-11421359-B2 · Aug 23, 2022 · US
Method for producing a filter medium, and a filter medium
US-11241645-B2 · Feb 8, 2022 · US
Conductive polymer microfiber mesh structure, manufacturing method thereof and electrode for flexible electronic device using the same
US-2022020509-A1 · Jan 20, 2022 · US
Polyamide nanofiber nonwovens for acoustic applications
US-2021262131-A1 · Aug 26, 2021 · US
Fiber sheet and method for manufacturing same
US-2020399802-A1 · Dec 24, 2020 · US
Method for Producing a Filter Medium, and a Filter Medium
US-2020346148-A1 · Nov 5, 2020 · US
Fiber sheet and method for manufacturing same
US-10801140-B2 · Oct 13, 2020 · US
Thermal bonding of nonwoven textiles containing cellulose acetate fibers
US-2020299882-A1 · Sep 24, 2020 · US
Polyamide nanofiber nonwovens
US-2020283937-A1 · Sep 10, 2020 · US
Method for producing a filter medium, and a filter medium
US-10675575-B2 · Jun 9, 2020 · US
Polyamide nanofiber nonwovens
US-10662561-B2 · May 26, 2020 · US
Polyamide nanofiber nonwovens
US-2018371656-A1 · Dec 27, 2018 · US