Extraction of delignified, cellulose-based fibers from natural plant material, and materials incorporating such fibers
US-2026055552-A1 · Feb 26, 2026 · US
with organic compounds (D21C3/20 and D21C3/222 take precedence)
with organic compounds (D21C3/20 and D21C3/222 take precedence) · 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 | D21C3/003 |
| Official title | {with organic compounds (D21C3/20 and D21C3/222 take precedence)} |
| Display label | with organic compounds (D21C3/20 and D21C3/222 take precedence) |
| Total patents | 59 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 9 |
| 2016 | 1 |
| 2017 | 6 |
| 2018 | 4 |
| 2019 | 7 |
| 2020 | 4 |
| 2021 | 6 |
| 2022 | 3 |
| 2023 | 7 |
| 2024 | 4 |
| 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
Process for increasing digestion efficiency of lignocellulosic material in a treatment vessel
US-2025333905-A1 · Oct 30, 2025 · US
Digester additive formulations and use thereof for pulp production
US-2025320659-A1 · Oct 16, 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
Method for separating biomass components by ternary system
US-12221747-B2 · Feb 11, 2025 · US
Processes for producing nanocellulose, and nanocellulose compositions produced therefrom
US-12091818-B2 · Sep 17, 2024 · US
Method for digesting lignocellulosic material
US-2024175205-A1 · May 30, 2024 · US
Foam-Based Manufacturing System and Process
US-2024175204-A1 · May 30, 2024 · US
Foam-based manufacturing system and process
US-11932988-B2 · Mar 19, 2024 · US
Method of transforming high consistency pulp fibers into pre-dispersed semi-dry and dry fibrous materials
US-11834785-B2 · Dec 5, 2023 · US
Nanolignocellulose compositions and processes to produce these compositions
US-11834523-B2 · Dec 5, 2023 · US
Method for separating biomass components by ternary system
US-2023323597-A1 · Oct 12, 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
Foam-based manufacturing system and process
US-2023074870-A1 · Mar 9, 2023 · US
Method to convert mechanical pulp derived waste material into value added cellulose products
US-11486094-B2 · Nov 1, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC D21C3/003?
- CPC D21C3/003 is the Cooperative Patent Classification code for “with organic compounds (D21C3/20 and D21C3/222 take precedence).”
- How many patents are filed under CPC D21C3/003 (with organic compounds (D21C3/20 and D21C3/222 take precedence))?
- Our database includes 59 publications tagged with this CPC code.
- Is patent activity under CPC D21C3/003 growing?
- Publication counts under this code: 4 in 2024 vs 7 in 2025 (latest complete years).