Processes for the Preparation of Alpha-Hydroxy Esters by Esterification of Alpha-Hydroxy Acids
US-2026001837-A1 · Jan 1, 2026 · US
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from the by-products of refining mineral oils
from the by-products of refining mineral oils · 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 | C07C319/30 |
| Official title | from the by-products of refining mineral oils |
| Display label | from the by-products of refining mineral oils |
| Total patents | 14 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 2 |
| 2017 | 1 |
| 2019 | 1 |
| 2020 | 4 |
| 2021 | 2 |
| 2022 | 1 |
| 2024 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for oxidation of sulfur-containing compounds
US-12134593-B2 · Nov 5, 2024 · US
Processes for the Preparation of Alpha-Hydroxy Esters by Esterification of Alpha-Hydroxy Acids
US-2022332681-A1 · Oct 20, 2022 · US
Method for oxidation of sulfur-containing compounds
US-2021332010-A1 · Oct 28, 2021 · US
Oxidized disulfide oil solvent compositions
US-11111212-B2 · Sep 7, 2021 · US
Oxidized disulfide oil solvent compositions
US-2020377451-A1 · Dec 3, 2020 · US
Purification of mercaptans or thiophenes using dividing wall column distillation
US-10807949-B2 · Oct 20, 2020 · US
Oxidized disulfide oil solvent compositions
US-10781168-B2 · Sep 22, 2020 · US
Oxidized disulfide oil solvent compositions
US-2020181074-A1 · Jun 11, 2020 · US
Purification of mercaptans or thiophenes using dividing wall column distillation
US-2019282920-A1 · Sep 19, 2019 · US
Process for the removal of sodium from di-sulfide oil
US-9790175-B2 · Oct 17, 2017 · US
A process for the removal of sodium from di-sulfide oil
US-2016362363-A1 · Dec 15, 2016 · US
Liquid-liquid extraction column containing two distinct types of plates
US-9333442-B2 · May 10, 2016 · US
Systems and methods for producing dimethyl sulfide from gasified coke
US-2015005207-A1 · Jan 1, 2015 · US