Sustainable process for the manufacture of 1,1,4,4-tetramethoxy-2-butene
US-12516009-B2 · Jan 6, 2026 · US
Separation; Purification; Stabilisation; Use of additives
Separation; Purification; Stabilisation; Use of additives · 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 | C07C41/58 |
| Official title | Separation; Purification; Stabilisation; Use of additives |
| Display label | Separation; Purification; Stabilisation; Use of additives |
| Total patents | 34 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 6 |
| 2017 | 1 |
| 2018 | 3 |
| 2019 | 2 |
| 2021 | 2 |
| 2022 | 2 |
| 2023 | 5 |
| 2024 | 5 |
| 2025 | 4 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Process for obtaining isobutene from a C4-hydrocarbon mixture
US-12448342-B2 · Oct 21, 2025 · US
Method for purifying (hydro)halocarbon by reduced pressure distillation from azeotropic or azeotropic-like composition
US-12448343-B2 · Oct 21, 2025 · US
Process for obtaining isobutene from a C4-hydrocarbon mixture
US-12378169-B2 · Aug 5, 2025 · US
Method for producing polyoxymethylene dimethyl ethers
US-12312303-B2 · May 27, 2025 · US
High purity isoamylene production from tertiary amyl methyl ether decomposition
US-11999672-B2 · Jun 4, 2024 · US
Process for obtaining isobutene from a c4-hydrocarbon mixture
US-2024150264-A1 · May 9, 2024 · US
Process for obtaining isobutene from a c4-hydrocarbon mixture
US-2024140885-A1 · May 2, 2024 · US
Method for alkylating acidic functional group
US-2024132431-A1 · Apr 25, 2024 · US
Method for producing organic fluorine compounds
US-2024018081-A1 · Jan 18, 2024 · US
Process for the reduction of regioisomer where the double bond is shifted from ethylenically unsaturated alkoxylated alcohols
US-2023374188-A1 · Nov 23, 2023 · US
Method for producing polyoxymethylene dimethyl ethers
US-2023278943-A1 · Sep 7, 2023 · US
Sustainable process for the manufacture of 1,1,4,4-tetramethoxy-2-butene
US-2023144339-A1 · May 11, 2023 · US
Method for Producing (Hydro)Halocarbon
US-2023063030-A1 · Mar 2, 2023 · US
High purity isoamylene production from tertiary amyl methyl ether decomposition
US-2023002294-A1 · Jan 5, 2023 · US
High purity isoamylene production from tertiary amyl methyl ether decomposition
US-11465949-B2 · Oct 11, 2022 · US
High purity isoamylene production from tertiary amyl methyl ether decomposition
US-2022135496-A1 · May 5, 2022 · US
Process for producing dimethoxymethane oligomers
US-10988564-B2 · Apr 27, 2021 · US
Method for producing α-fluoro acrylic acid ester, and composition containing highly-pure fluorocyclopropane derivative, and composition containing highly-pure α-fluoro acrylic acid ester
US-10981857-B2 · Apr 20, 2021 · US
Process for producing dimethoxymethane oligomers
US-2019276579-A1 · Sep 12, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C41/58?
- CPC C07C41/58 is the Cooperative Patent Classification code for “Separation; Purification; Stabilisation; Use of additives.”
- How many patents are filed under CPC C07C41/58 (Separation; Purification; Stabilisation; Use of additives)?
- Our database includes 34 publications tagged with this CPC code.
- Is patent activity under CPC C07C41/58 growing?
- Publication counts under this code: 5 in 2024 vs 4 in 2025 (latest complete years).