Modified fiber from shredded pulp sheets, methods, and systems
US-10156042-B2 · Dec 18, 2018 · US
organic compounds
organic compounds · 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 | D21C9/005 |
| Official title | {organic compounds} |
| Display label | organic compounds |
| Total patents | 181 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 12 |
| 2016 | 20 |
| 2017 | 20 |
| 2018 | 19 |
| 2019 | 17 |
| 2020 | 23 |
| 2021 | 22 |
| 2022 | 12 |
| 2023 | 15 |
| 2024 | 6 |
| 2025 | 13 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Modified fiber, methods, and systems
US-2018258589-A1 · Sep 13, 2018 · US
Nanocellulose production co-located at a pulp and paper mill
US-2018251941-A1 · Sep 6, 2018 · US
Reducing content of hexenuronic acids in cellulosic pulp
US-2018230649-A1 · Aug 16, 2018 · US
Crosslinked cellulose as precursor in production of high-grade cellulose derivatives and related technology
US-2018187372-A1 · Jul 5, 2018 · US
Integrating the production of carboxylated cellulose nanofibrils and cellulose nanocrystals using recyclable organic acids
US-10006166-B2 · Jun 26, 2018 · US
Reducing content of hexenuronic acids in cellulosic pulp
US-9970157-B2 · May 15, 2018 · US
Crosslinked cellulose as precursor in production of high-grade cellulose derivatives and related technology
US-9926665-B2 · Mar 27, 2018 · US
Binder compositions for making crosslinked cellulose fiber
US-2017356134-A1 · Dec 14, 2017 · US
Whitening agents for cellulosic substrates
US-9777250-B2 · Oct 3, 2017 · US
Crosslinked cellulose as precursor in production of high-grade cellulose derivatives and related technology
US-9771687-B2 · Sep 26, 2017 · US
Crosslinked cellulose as precursor in production of high-grade cellulose derivatives and related technology
US-2017247839-A1 · Aug 31, 2017 · US
Crosslinked cellulose as low-cost precursor in production of high-grade cellulose derivatives and related technology
US-2017247833-A1 · Aug 31, 2017 · US
Integrating the production of carboxylated cellulose nanofibrils and cellulose nanocrystals using recyclable organic acids
US-2017226692-A1 · Aug 10, 2017 · US
Method for Making Lignocellulosic Paper and Paper Products
US-2017218570-A1 · Aug 3, 2017 · US
Esterified cellulose pulp compositions and related methods
US-9708760-B2 · Jul 18, 2017 · US
Modified fiber from shredded pulp sheets, methods, and systems
US-2017183817-A1 · Jun 29, 2017 · US
Laccases for bio-bleaching
US-9677053-B2 · Jun 13, 2017 · US
Method for making lignocellulosic paper and paper product
US-9663899-B2 · May 30, 2017 · US
Treatment of Lignocellulosic Biomass with Aromatic Chemicals as Scavengers
US-2017137579-A1 · May 18, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC D21C9/005?
- CPC D21C9/005 is the Cooperative Patent Classification code for “organic compounds.”
- How many patents are filed under CPC D21C9/005 (organic compounds)?
- Our database includes 181 publications tagged with this CPC code.
- Is patent activity under CPC D21C9/005 growing?
- Publication counts under this code: 6 in 2024 vs 13 in 2025 (latest complete years).