Processes and apparatus for producing nanocellulose, and compositions and products produced therefrom
US-10093748-B2 · Oct 9, 2018 · US
with organic solvents {or in solvent environment}
with organic solvents {or in solvent environment} · 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 | D21C3/20 |
| Official title | with organic solvents {or in solvent environment} |
| Display label | with organic solvents {or in solvent environment} |
| Total patents | 140 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 21 |
| 2016 | 21 |
| 2017 | 13 |
| 2018 | 11 |
| 2019 | 14 |
| 2020 | 8 |
| 2021 | 13 |
| 2022 | 9 |
| 2023 | 4 |
| 2024 | 12 |
| 2025 | 13 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Nanocellulose production co-located at a pulp and paper mill
US-2018251941-A1 · Sep 6, 2018 · US
Thermoplastic resin composition and method for producing thermoplastic resin composition
US-2018179369-A1 · Jun 28, 2018 · US
Method for producing cellulose-containing solid material and method for producing glucose
US-2018171552-A1 · Jun 21, 2018 · US
Methods for the production of high solids nanocellulose
US-2018094383-A1 · Apr 5, 2018 · US
Nanocellulose-reinforced corrugated medium
US-2017328003-A1 · Nov 16, 2017 · US
Methods and systems for processing cellulosic biomass
US-9790436-B2 · Oct 17, 2017 · US
Methods and systems for processing cellulosic biomass
US-9790432-B2 · Oct 17, 2017 · US
Methods and systems for processing cellulosic biomass
US-9783740-B2 · Oct 10, 2017 · US
Treatment of biomass to dissolve lignin with ionic liquid composition
US-9765478-B2 · Sep 19, 2017 · US
Comprehensive process for selectively separating lignocellulosic biomass into purified components with high yield
US-2017247834-A1 · Aug 31, 2017 · US
Method for precipitating lignin from organosolv pulping liquors
US-2017247835-A1 · Aug 31, 2017 · US
A pretreatment process of lignocellulosic biomass
US-2017241076-A1 · Aug 24, 2017 · US
Processes and apparatus for producing nanocellulose, and compositions and products produced therefrom
US-2017210827-A1 · Jul 27, 2017 · US
Processes for producing cellulose pulp and pulp-derived products from lignocellulosic biomass
US-2017204563-A1 · Jul 20, 2017 · US
Biomass fractionation processes employing sulfur dioxide
US-9631316-B2 · Apr 25, 2017 · US
Methods and systems for processing lignin during hydrothermal digestion of cellulosic biomass solids
US-9562160-B2 · Feb 7, 2017 · US
Processes for producing cellulose pulp and pulp-derived products from lignocellulosic biomass
US-9556557-B2 · Jan 31, 2017 · US
Refining cellulose in a solvent for production of nanocellulose materials
US-2016326697-A1 · Nov 10, 2016 · US
Methods for digestion of cellulosic biomass solids in the presence of a phenolic solvent generated in situ from lignin
US-9458247-B2 · Oct 4, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC D21C3/20?
- CPC D21C3/20 is the Cooperative Patent Classification code for “with organic solvents {or in solvent environment}.”
- How many patents are filed under CPC D21C3/20 (with organic solvents {or in solvent environment})?
- Our database includes 140 publications tagged with this CPC code.
- Is patent activity under CPC D21C3/20 growing?
- Publication counts under this code: 12 in 2024 vs 13 in 2025 (latest complete years).