Extraction of delignified, cellulose-based fibers from natural plant material, and materials incorporating such fibers
US-2026055552-A1 · Feb 26, 2026 · US
with compounds not otherwise provided for
with compounds not otherwise provided for · 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 | D21C3/006 |
| Official title | {with compounds not otherwise provided for} |
| Display label | with compounds not otherwise provided for |
| Total patents | 25 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2017 | 1 |
| 2018 | 3 |
| 2019 | 2 |
| 2020 | 2 |
| 2021 | 2 |
| 2023 | 4 |
| 2024 | 2 |
| 2025 | 7 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Evaporative devices having delignified plant materials, and systems and methods for fabrication and use thereof
US-12509822-B2 · Dec 30, 2025 · US
Lignocellulose refinery
US-12503410-B2 · Dec 23, 2025 · US
Process for increasing digestion efficiency of lignocellulosic material in a treatment vessel
US-2025333905-A1 · Oct 30, 2025 · US
Use of cellulase to improve viscosity control of kraft dissolving pulp
US-2025314012-A1 · Oct 9, 2025 · US
Process for increasing digestion efficiency of lignocellulosic material in a treatment vessel
US-12351981-B2 · Jul 8, 2025 · US
Method for producing densified cellulosic composite material
US-12320065-B2 · Jun 3, 2025 · US
Processes for fractionation of biomass
US-2025075425-A1 · Mar 6, 2025 · US
Processes for producing nanocellulose, and nanocellulose compositions produced therefrom
US-12091818-B2 · Sep 17, 2024 · US
Lignocellulose refinery
US-2024116835-A1 · Apr 11, 2024 · US
Nanolignocellulose compositions and processes to produce these compositions
US-11834523-B2 · Dec 5, 2023 · US
Evaporative devices having delignified plant materials, and systems and methods for fabrication and use thereof
US-2023203311-A1 · Jun 29, 2023 · US
Extraction of delignified, cellulose-based fibers from natural plant material, and materials incorporating such fibers
US-2023160141-A1 · May 25, 2023 · US
Process for increasing digestion efficiency of lignocellulosic material in a treatment vessel
US-2023160140-A1 · May 25, 2023 · US
Processes for producing nanocellulose, and nanocellulose compositions produced therefrom
US-2021277151-A1 · Sep 9, 2021 · US
Nanolignocellulose compositions and processes to produce these compositions
US-2021221919-A1 · Jul 22, 2021 · US
Method for producing densified cellulosic composite material
US-2020208346-A1 · Jul 2, 2020 · US
Method for producing acetate grade dissolving pulp from poplar residual slabs
US-2020173103-A1 · Jun 4, 2020 · US
Method for producing cellulose-containing solid material and method for producing glucose
US-10450698-B2 · Oct 22, 2019 · US
Use of Cellulase to improve Viscosity Control of Dissolving Pulp
US-2019257031-A1 · Aug 22, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC D21C3/006?
- CPC D21C3/006 is the Cooperative Patent Classification code for “with compounds not otherwise provided for.”
- How many patents are filed under CPC D21C3/006 (with compounds not otherwise provided for)?
- Our database includes 25 publications tagged with this CPC code.
- Is patent activity under CPC D21C3/006 growing?
- Publication counts under this code: 2 in 2024 vs 7 in 2025 (latest complete years).