Method for preparing 4-hydroxy-2-methylene-butanal, 4-hydroxy-2-methyl-but-2-enal and esters thereof
US-2025296906-A1 · Sep 25, 2025 · US
the carbon atom being acyclic
the carbon atom being acyclic · 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 | C07C409/04 |
| Official title | the carbon atom being acyclic |
| Display label | the carbon atom being acyclic |
| Total patents | 34 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 3 |
| 2017 | 3 |
| 2018 | 6 |
| 2019 | 7 |
| 2020 | 7 |
| 2021 | 2 |
| 2022 | 1 |
| 2023 | 1 |
| 2025 | 3 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Purification of alkyl hydroperoxide by extractive distillation
US-12227470-B2 · Feb 18, 2025 · US
Method for concentrating a water-soluble organic peroxide
US-12209066-B2 · Jan 28, 2025 · US
Organic peroxide dispersions
US-11560535-B2 · Jan 24, 2023 · US
Method for concentrating a water-soluble organic peroxide
US-2022073458-A1 · Mar 10, 2022 · US
Chemical indicator and method of use
US-11112393-B2 · Sep 7, 2021 · US
Method for producing oxidation reaction product of hydrocarbon or derivative thereof, and method for producing oxidation reaction product of olefin
US-10947190-B2 · Mar 16, 2021 · US
Preparation of compounds from levulinic acid
US-10870622-B2 · Dec 22, 2020 · US
Method for producing oxidation reaction product of hydrocarbon or derivative thereof, and method for producing oxidation reaction product of olefin
US-2020377453-A1 · Dec 3, 2020 · US
Integrated process for making alpha, beta-unsaturated functional compound
US-2020255357-A1 · Aug 13, 2020 · US
Preparation of compounds from levulinic acid
US-10647670-B2 · May 12, 2020 · US
Antifungal compounds derived from lavender oil
US-10584106-B1 · Mar 10, 2020 · US
Antifungal compounds derived from lavender oil
US-2020071284-A1 · Mar 5, 2020 · US
Preparation of compounds from levulinic acid
US-2020055816-A1 · Feb 20, 2020 · US
Methods and systems for converting hydrocarbons
US-10513475-B2 · Dec 24, 2019 · US
Organic peroxide dispersions
US-2019292495-A1 · Sep 26, 2019 · US
Production of high octane hydrocarbon from light alkane feed using oxidation and acid catalysis chemistry
US-10421698-B2 · Sep 24, 2019 · US
Production of iso-octene from tertiary alcohols
US-10421699-B2 · Sep 24, 2019 · US
Production of alkylate from light alkanes
US-10414701-B2 · Sep 17, 2019 · US
Colored organic peroxide compositions
US-10358559-B2 · Jul 23, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C409/04?
- CPC C07C409/04 is the Cooperative Patent Classification code for “the carbon atom being acyclic.”
- How many patents are filed under CPC C07C409/04 (the carbon atom being acyclic)?
- Our database includes 34 publications tagged with this CPC code.
- Is patent activity under CPC C07C409/04 growing?
- Publication counts under this code: 1 in 2023 vs 3 in 2025 (latest complete years).