Production of 1,6-hexanediol from adipic acid
US-10150719-B2 · Dec 11, 2018 · US
Dihydroxylic alcohols
Dihydroxylic alcohols · 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 | C07C31/20 |
| Official title | Dihydroxylic alcohols |
| Display label | Dihydroxylic alcohols |
| Total patents | 184 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 17 |
| 2016 | 12 |
| 2017 | 20 |
| 2018 | 16 |
| 2019 | 23 |
| 2020 | 21 |
| 2021 | 25 |
| 2022 | 18 |
| 2023 | 13 |
| 2024 | 7 |
| 2025 | 11 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Catalyst system and process for the production of glycols
US-2018326405-A1 · Nov 15, 2018 · US
Process for the production of glycols from a saccharide-containing feedstock
US-10125071-B2 · Nov 13, 2018 · US
Hydroformylation process for producing 1,6-disubstituted hexane derivatives
US-2018297926-A1 · Oct 18, 2018 · US
Apparatus for preparing glycol and method of preparing the same
US-10093603-B2 · Oct 9, 2018 · US
Process for the preparation of ethylene glycol from sugars
US-10077222-B2 · Sep 18, 2018 · US
Ruthenium complex, method for producing same, and use of same
US-10059729-B2 · Aug 28, 2018 · US
Aliphatic materials and uses thereof in heating and cooling applications
US-10036598-B2 · Jul 31, 2018 · US
Process for producing polyhydric alcohol
US-10029965-B2 · Jul 24, 2018 · US
Method for chemical modification of a graphene edge, graphene with a chemically modified edge and devices including the graphene
US-9988274-B2 · Jun 5, 2018 · US
Highly efficient neopentyl glycol preparation method and device therefor
US-9914682-B2 · Mar 13, 2018 · US
Metal complex including tridentate aminodicarbene ligand and hydrogenation reduction method using same
US-9840527-B2 · Dec 12, 2017 · US
Process for the separation of glycols
US-2017334816-A1 · Nov 23, 2017 · US
Method for breakdown of formates
US-9809517-B2 · Nov 7, 2017 · US
Process for transformation of a feedstock comprising a lignocellulosic biomass using an acidic homogeneous catalyst in combination with a heterogeneous catalyst comprising a specific substrate
US-9809504-B2 · Nov 7, 2017 · US
Process for making biobased propylene glycol from lactic acid esters
US-2017305821-A1 · Oct 26, 2017 · US
Process for preparing high molecular weight polyacrylates having narrow polydispersity indices and compositions made therefrom
US-2017298162-A1 · Oct 19, 2017 · US
Process and apparatus for the preparation of alkylene glycol
US-2017291119-A1 · Oct 12, 2017 · US
Reflux condenser
US-2017239590-A1 · Aug 24, 2017 · US
Polymer compound and light emitting device using the same
US-9741934-B2 · Aug 22, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C31/20?
- CPC C07C31/20 is the Cooperative Patent Classification code for “Dihydroxylic alcohols.”
- How many patents are filed under CPC C07C31/20 (Dihydroxylic alcohols)?
- Our database includes 184 publications tagged with this CPC code.
- Is patent activity under CPC C07C31/20 growing?
- Publication counts under this code: 7 in 2024 vs 11 in 2025 (latest complete years).