Mixed metal oxide ammoxidation catalysts
US-9844769-B2 · Dec 19, 2017 · US
Acryaldehyde; Methacryaldehyde
Acryaldehyde; Methacryaldehyde · 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 | C07C47/22 |
| Official title | Acryaldehyde; Methacryaldehyde |
| Display label | Acryaldehyde; Methacryaldehyde |
| Total patents | 174 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 16 |
| 2016 | 30 |
| 2017 | 20 |
| 2018 | 20 |
| 2019 | 15 |
| 2020 | 22 |
| 2021 | 11 |
| 2022 | 11 |
| 2023 | 7 |
| 2024 | 19 |
| 2025 | 1 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Catalyst for glycerin dehydration, preparation method therefor, and acrolein preparation method using catalyst
US-2017304804-A1 · Oct 26, 2017 · US
Optimized process for preparing methacrylic acid
US-2017305830-A1 · Oct 26, 2017 · US
Glycerol dehydration methods and products thereof
US-9796648-B2 · Oct 24, 2017 · US
Optimized method for producing methacrolein
US-2017275227-A1 · Sep 28, 2017 · US
Dehydration process
US-9765007-B2 · Sep 19, 2017 · US
Processes for making methacrylic acid
US-9751823-B2 · Sep 5, 2017 · US
Process for preparation of methacrylic acid and methacrylic acid esters
US-9732023-B2 · Aug 15, 2017 · US
Multi-tubular reactor and multi-tubular reactor design and fabrication method
US-9713800-B2 · Jul 25, 2017 · US
Plant and process for performance of heterogeneously catalyzed gas phase reactions
US-9636651-B2 · May 2, 2017 · US
Method of regulating the water content in a continuous method for producing methacrolein
US-9611204-B2 · Apr 4, 2017 · US
Novel glycerol dehydration methods and products thereof
US-2017057898-A1 · Mar 2, 2017 · US
Method for producing methacrolein and the conditioning/draining thereof for direct oxidative esterification
US-9580374-B2 · Feb 28, 2017 · US
Method for producing unsaturated aldehyde and/or unsaturated carboxylic acid
US-9580376-B2 · Feb 28, 2017 · US
Catalyst for glycerin dehydration, preparation method thereof, and preparation method of acrolein
US-9527065-B2 · Dec 27, 2016 · US
Method for producing acrolein and/or acrylic acid from glycerol
US-9527791-B2 · Dec 27, 2016 · US
Compositions and methods related to the production of acrylonitrile
US-2016368861-A1 · Dec 22, 2016 · US
Method for supplying reaction gases in catalytic vapor phase oxidation process
US-9493386-B2 · Nov 15, 2016 · US
Tertiary alkylamines as methacrolein synthesis co-catalyst
US-2016280624-A1 · Sep 29, 2016 · US
Method for preparing acrolein from glycerol or glycerine
US-9447009-B2 · Sep 20, 2016 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C47/22?
- CPC C07C47/22 is the Cooperative Patent Classification code for “Acryaldehyde; Methacryaldehyde.”
- How many patents are filed under CPC C07C47/22 (Acryaldehyde; Methacryaldehyde)?
- Our database includes 174 publications tagged with this CPC code.
- Is patent activity under CPC C07C47/22 growing?
- Publication counts under this code: 19 in 2024 vs 1 in 2025 (latest complete years).