Pretreatment methods for cotton textile waste fabric
US-12351983-B2 · Jul 8, 2025 · US
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Washing the fibres
Washing the fibres · 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 | D21D1/40 |
| Official title | Washing the fibres |
| Display label | Washing the fibres |
| Total patents | 17 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 2 |
| 2017 | 3 |
| 2019 | 1 |
| 2021 | 1 |
| 2022 | 3 |
| 2023 | 1 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
System and process for refining lignocellulosic biomass material
US-12305329-B2 · May 20, 2025 · US
Pretreatment methods for cotton textile waste fabric
US-2023175205-A1 · Jun 8, 2023 · US
Alignment device and method for aligning a shower bar nozzle flange
US-11529639-B2 · Dec 20, 2022 · US
Preparation method of cotton bast fiber and chitosan composite non-woven fabric for filtration
US-11383189-B2 · Jul 12, 2022 · US
System and process for refining lignocellulosic biomass material
US-2022162798-A1 · May 26, 2022 · US
Alignment device and method for aligning a shower bar nozzle flange
US-2021370324-A1 · Dec 2, 2021 · US
Preparation Method of Cotton Bast Fiber and Chitosan Composite Non-woven Fabric for Filtration
US-2019217232-A1 · Jul 18, 2019 · US
Method of and an arrangement for transferring a process liquid, an industrial facility and a method of simplifying the layout of such
US-2017268170-A1 · Sep 21, 2017 · US
Method of and an arrangement for transferring a process liquid, an industrial facility and a method of simplifying the layout of such
US-9708762-B2 · Jul 18, 2017 · US
Apparatus for washing and/or dewatering of cellulose pulp
US-9598818-B2 · Mar 21, 2017 · US
Method of and an arrangement for transferring a process liquid, an industrial facility and a method of simplifying the layout of such
US-2016319484-A1 · Nov 3, 2016 · US
Method of and an arrangement for transferring a process liquid, an industrial facility and a method of simplifying the layout of such
US-9416491-B2 · Aug 16, 2016 · US
An apparatus for washing and/or dewaterng of cellulose pulp
US-2015361617-A1 · Dec 17, 2015 · US
System for washing and dewatering pulp
US-9200407-B2 · Dec 1, 2015 · US
Assembly for washer shower pipe and method to adjust open area of orifices in the pipe
US-2015034733-A1 · Feb 5, 2015 · US
Method for using washer press with multiple nips and multiple displacement wash zones
US-8926795-B2 · Jan 6, 2015 · US