Process for preparing indene acryladehyde derivatives
US-12583809-B2 · Mar 24, 2026 · US
by condensation of aldehydes, paraformaldehyde, or ketones
by condensation of aldehydes, paraformaldehyde, or ketones · 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 | C07C41/56 |
| Official title | by condensation of aldehydes, paraformaldehyde, or ketones |
| Display label | by condensation of aldehydes, paraformaldehyde, or ketones |
| Total patents | 43 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 11 |
| 2017 | 5 |
| 2018 | 4 |
| 2019 | 3 |
| 2020 | 2 |
| 2021 | 2 |
| 2022 | 3 |
| 2023 | 4 |
| 2024 | 1 |
| 2025 | 2 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for producing glycolaldehyde dialkyl acetal
US-2025223252-A1 · Jul 10, 2025 · US
Method for producing polyoxymethylene dimethyl ethers
US-12312303-B2 · May 27, 2025 · US
Method for producing trioxane or methylal
US-2024425472-A1 · Dec 26, 2024 · US
Preparation and application of a 5-bromoquinazoline derivative
US-11840537-B2 · Dec 12, 2023 · US
Method for producing polyoxymethylene dimethyl ethers
US-2023278943-A1 · Sep 7, 2023 · US
Process for preparing indene acryladehyde derivatives
US-2023271911-A1 · Aug 31, 2023 · US
Method for producing oxymethylene ether
US-2023046597-A1 · Feb 16, 2023 · US
Method for producing alpha-allylated cycloalkanone
US-11524929-B2 · Dec 13, 2022 · US
Etherification process
US-11472759-B2 · Oct 18, 2022 · US
Method for producing alpha-allylated cycloalkanone
US-2022153671-A1 · May 19, 2022 · US
Etherification Process
US-2021363084-A1 · Nov 25, 2021 · US
Process for producing dimethoxymethane oligomers
US-10988564-B2 · Apr 27, 2021 · US
Cetane-boosting fuel additives, method of manufacture, and uses thereof
US-10829706-B2 · Nov 10, 2020 · US
Cetane-boosting fuel additives, method of manufacture, and uses thereof
US-2020157444-A1 · May 21, 2020 · US
Process for producing dimethoxymethane oligomers
US-2019276579-A1 · Sep 12, 2019 · US
Process for preparing spirogalbanone
US-10227280-B1 · Mar 12, 2019 · US
Process For Preparing Spirogalbanone
US-2019055181-A1 · Feb 21, 2019 · US
1-halo-6,9-pentadecadiene and method for producing (7Z,10Z)-7,10-hexadecadienal
US-10138191-B2 · Nov 27, 2018 · US
1-halo-6,9-pentadecadiene and method for producing (7z,10z)-7,10-hexadecadienal
US-2018305284-A1 · Oct 25, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C41/56?
- CPC C07C41/56 is the Cooperative Patent Classification code for “by condensation of aldehydes, paraformaldehyde, or ketones.”
- How many patents are filed under CPC C07C41/56 (by condensation of aldehydes, paraformaldehyde, or ketones)?
- Our database includes 43 publications tagged with this CPC code.
- Is patent activity under CPC C07C41/56 growing?
- Publication counts under this code: 1 in 2024 vs 2 in 2025 (latest complete years).