Method of depolymerising phenolic polymers
US-12275697-B2 · Apr 15, 2025 · US
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by hydrolysis of lignin or sulfite waste liquor
by hydrolysis of lignin or sulfite waste liquor · 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 | C07C37/54 |
| Official title | by hydrolysis of lignin or sulfite waste liquor |
| Display label | by hydrolysis of lignin or sulfite waste liquor |
| Total patents | 20 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2016 | 3 |
| 2017 | 3 |
| 2018 | 1 |
| 2019 | 1 |
| 2020 | 1 |
| 2022 | 5 |
| 2023 | 3 |
| 2024 | 2 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Solvolysis process
US-2024417628-A1 · Dec 19, 2024 · US
Method for the selective cleavage of a compound comprising an aromatic ring and a c-o-c linkage
US-2024043626-A1 · Feb 8, 2024 · US
Methods for electroreductive lignin depolymerization
US-2023416289-A1 · Dec 28, 2023 · US
A method for co-producing monophenols and cellulose by catalytic oxidation of biomass over a transition metal oxide
US-2023021045-A1 · Jan 19, 2023 · US
Method for preparation of lignin oligomers
US-2023002433-A1 · Jan 5, 2023 · US
Method for preparation of 2,5-dimethylphenol by selective catalytic conversion of lignin
US-11524928-B2 · Dec 13, 2022 · US
Catalytic depolymerization of lignin to high value hydrocarbons
US-2022332673-A1 · Oct 20, 2022 · US
Method for preparation of 2,5-dimethylphenol by selective catalytic conversion of lignin
US-2022298092-A1 · Sep 22, 2022 · US
Method of Depolymerising Phenolic Polymers
US-2022227694-A1 · Jul 21, 2022 · US
Methods for lignin depolymerization using thiols
US-11267838-B2 · Mar 8, 2022 · US
Methods for lignin depolymerization using thiols
US-2020048292-A1 · Feb 13, 2020 · US
Method of depolymerizing lignin
US-10370315-B2 · Aug 6, 2019 · US
Systems and methods for the depolymerization of a biopolymer
US-10059650-B2 · Aug 28, 2018 · US
Use of catalyst prepared with a subgroup VI element for the production of organic chemicals and fuels from lignin
US-9789473-B2 · Oct 17, 2017 · US
Method of depolymerizing lignin
US-2017152199-A1 · Jun 1, 2017 · US
Zeolite Catalyst for Lignin to Phenol Conversion
US-2017152200-A1 · Jun 1, 2017 · US
Systems and Methods for the Depolymerization of a Biopolymer
US-2016130202-A1 · May 12, 2016 · US
Process for the conversion of lignin to liquid hydrocarbons
US-9334450-B2 · May 10, 2016 · US
Use of catalyst prepared with a subgroup vi element for the production of organic chemicals and fuels from lignin
US-2016074843-A1 · Mar 17, 2016 · US