Method for producing cellulose ether
US-2025361330-A1 · Nov 27, 2025 · US
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Isolation
Isolation · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C08B11/22 |
| Official title | Isolation |
| Display label | Isolation |
| Total patents | 19 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2016 | 4 |
| 2017 | 2 |
| 2018 | 1 |
| 2019 | 4 |
| 2020 | 1 |
| 2021 | 2 |
| 2022 | 2 |
| 2023 | 1 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Hydroxypropyl methylcellulose acetate succinate powder, and method of producing the same
US-2025034284-A1 · Jan 30, 2025 · US
Water-soluble cellulose ether and method for producing the same
US-11634510-B2 · Apr 25, 2023 · US
Size reduction of ethylcellulose polymer particles
US-11312789-B2 · Apr 26, 2022 · US
Process for fractionating an esterified cellulose ether
US-2022056157-A1 · Feb 24, 2022 · US
Method for producing carboxymethyl cellulose or salt thereof, and binding agent for electrode
US-10941218-B2 · Mar 9, 2021 · US
Hypromellose phthalate and method for producing the same
US-10934369-B2 · Mar 2, 2021 · US
Water-soluble cellulose ether and method for producing the same
US-2020362060-A1 · Nov 19, 2020 · US
Hypromellose phthalate and method for producing the same
US-2019345263-A1 · Nov 14, 2019 · US
Method for producing water-soluble hydroxyethyl cellulose
US-2019263938-A1 · Aug 29, 2019 · US
Method for producing carboxymethyl cellulose or salt thereof, and binding agent for electrode
US-2019055323-A1 · Feb 21, 2019 · US
Dissolution and processing of cellulose
US-10179823-B2 · Jan 15, 2019 · US
Process for fractionating an esterified cellulose ether
US-2018030157-A1 · Feb 1, 2018 · US
Size reduction of ethylcellulose polymer particles
US-2017369596-A1 · Dec 28, 2017 · US
Process for recovering an esterified cellulose ether from a reaction product mixture
US-9587037-B2 · Mar 7, 2017 · US
Dissolution and processing of cellulose
US-2016251451-A1 · Sep 1, 2016 · US
A process for recovering an esterified cellulose ether from a reaction product mixture
US-2016222133-A1 · Aug 4, 2016 · US
Dissolution and processing of cellulose
US-9358251-B2 · Jun 7, 2016 · US
Process for producing cellulose derivatives of high bulk density, good flowability and improved dispersibility in cold water
US-9334416-B2 · May 10, 2016 · US