Process for preparing cyanoacetates
US-12351540-B2 · Jul 8, 2025 · US
from amides or lactams
from amides or lactams · 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 | C07C67/20 |
| Official title | from amides or lactams |
| Display label | from amides or lactams |
| Total patents | 41 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 7 |
| 2017 | 7 |
| 2018 | 7 |
| 2019 | 5 |
| 2020 | 3 |
| 2021 | 1 |
| 2022 | 2 |
| 2023 | 2 |
| 2024 | 1 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Preparation of tertiary ester-containing aromatic vinyl monomer
US-2025136736-A1 · May 1, 2025 · US
Optimized process for synthesizing methacrylic acid (maa) and/or alkyl methacrylate by reducing unwanted byproducts
US-2024010604-A1 · Jan 11, 2024 · US
Optimized process for synthesizing alkyl methacrylate by reducing unwanted byproducts
US-2023416184-A1 · Dec 28, 2023 · US
Improved process for preparing methyl methacrylate and/or methacrylic acid by reduced back mixing during conversion
US-2023399286-A1 · Dec 14, 2023 · US
Method for converting N,N-dialkylamide compound into ester compound using complex of fourth-period transition metal as catalyst
US-11377415-B2 · Jul 5, 2022 · US
Process for preparing cyanoacetates
US-2022033350-A1 · Feb 3, 2022 · US
Esterification unit for producing crude methyl methacrylate, esterification process using said unit and plant comprising said unit
US-11084774-B2 · Aug 10, 2021 · US
Method for converting n,n-dialkylamide compound into ester compound using complex of fourth-period transition metal as catalyst
US-2020399200-A1 · Dec 24, 2020 · US
Installation and process for the preparation of hydrogen cyanide
US-10865118-B2 · Dec 15, 2020 · US
Esterification unit for producing crude methyl methacrylate, esterification process using said unit and plant comprising said unit
US-2020270195-A1 · Aug 27, 2020 · US
Thermal conversion vessel used in a process for amidification of acetone cyanohydrin
US-10358410-B2 · Jul 23, 2019 · US
Reduced fouling process for the production of methyl methacrylate
US-10294190-B2 · May 21, 2019 · US
Process for producing fluorinated electrolyte solvent
US-10294189-B2 · May 21, 2019 · US
Hydrolysis vessel used in a process for amidification of acetone cyanohydrin
US-10273199-B2 · Apr 30, 2019 · US
Method for preparing alpha-hydroxycarboxylic acid esters in which ammonia is recycled
US-10227284-B2 · Mar 12, 2019 · US
Esterification unit for producing crude methyl methacrylate, esterification process using said unit and plant comprising said unit
US-10131614-B2 · Nov 20, 2018 · US
Installation and process for the preparation of hydrogen cyanide
US-2018215626-A1 · Aug 2, 2018 · US
Installation and process for the preparation of hydrogen cyanide
US-9944533-B2 · Apr 17, 2018 · US
Biomass-derived methyl methacrylate and corresponding manufacturing method, uses and polymers
US-9938225-B2 · Apr 10, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C67/20?
- CPC C07C67/20 is the Cooperative Patent Classification code for “from amides or lactams.”
- How many patents are filed under CPC C07C67/20 (from amides or lactams)?
- Our database includes 41 publications tagged with this CPC code.
- Is patent activity under CPC C07C67/20 growing?
- Publication counts under this code: 1 in 2024 vs 2 in 2025 (latest complete years).