Method for Preparing a Stable Lignin-Phenol Blend and a Stable Lignin-Phenol Blend Obtained by Said Method
US-2025197640-A1 · Jun 19, 2025 · US
Block or graft polymers prepared by polycondensation of aldehydes or ketones onto macromolecular compounds
Block or graft polymers prepared by polycondensation of aldehydes or ketones onto macromolecular compounds · 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 | C08G8/38 |
| Official title | Block or graft polymers prepared by polycondensation of aldehydes or ketones onto macromolecular compounds |
| Display label | Block or graft polymers prepared by polycondensation of aldehydes or ketones onto macromolecular compounds |
| Total patents | 37 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 3 |
| 2017 | 2 |
| 2018 | 4 |
| 2019 | 6 |
| 2020 | 5 |
| 2021 | 6 |
| 2022 | 3 |
| 2023 | 2 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Process for preparing a solution of lignin in an aqueous medium
US-12331150-B2 · Jun 17, 2025 · US
Process for preparing a lignin-based resin
US-12252593-B2 · Mar 18, 2025 · US
Liquid lignin composition comprising lignin, water, alkali and urea
US-12221545-B2 · Feb 11, 2025 · US
Stable Lignin-Phenol Blend for Use in Lignin Modified Phenol-Formaldehyde Resins
US-2023220208-A1 · Jul 13, 2023 · US
Process for preparing a solution of lignin in an aqueous medium
US-11667792-B2 · Jun 6, 2023 · US
Composition of cellulose nanocrystals and carboxymethyl cellulose
US-2022289948-A1 · Sep 15, 2022 · US
Process for preparing a lignin-based resin
US-2022106446-A1 · Apr 7, 2022 · US
Process for preparing a solution of lignin in an aqueous medium
US-2022033561-A1 · Feb 3, 2022 · US
Lignin-based phenolic resin
US-11130257-B2 · Sep 28, 2021 · US
Method for increasing the reacitivity of lignin, and a resin composition comprising said lignin
US-11104774-B2 · Aug 31, 2021 · US
Activated lignin composition, a method for the manufacturing thereof and use thereof
US-11084931-B2 · Aug 10, 2021 · US
Polymer containing silphenylene and polyether structures
US-10982053-B2 · Apr 20, 2021 · US
Method for increasing the reactivity of lignin
US-10894855-B2 · Jan 19, 2021 · US
Method for activating and precipitating lignin
US-10894866-B2 · Jan 19, 2021 · US
High residual content (HRC) kraft/soda lignin as an ingredient in wood adhesives
US-10858554-B2 · Dec 8, 2020 · US
Liquid lignin composition, lignin-based resin, and method of increasing the solubility of lignin
US-10717873-B2 · Jul 21, 2020 · US
Liquid lignin composition comprising lignin, water, alkali and urea
US-2020216672-A1 · Jul 9, 2020 · US
Methods for preparing a lignin dispersion and a resin from the lignin dispersion
US-2020157287-A1 · May 21, 2020 · US
Process for preparing a solution of lignin in an aqueous medium
US-2020079960-A1 · Mar 12, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08G8/38?
- CPC C08G8/38 is the Cooperative Patent Classification code for “Block or graft polymers prepared by polycondensation of aldehydes or ketones onto macromolecular compounds.”
- How many patents are filed under CPC C08G8/38 (Block or graft polymers prepared by polycondensation of aldehydes or ketones onto macromolecular compounds)?
- Our database includes 37 publications tagged with this CPC code.
- Is patent activity under CPC C08G8/38 growing?
- Publication counts under this code: 2 in 2023 vs 4 in 2025 (latest complete years).