Recycled content organic chemical compounds from waste plastic
US-2026035324-A1 · Feb 5, 2026 · US
by reaction of ammonia with carboxylic acids with replacement of carboxyl groups by cyano groups
by reaction of ammonia with carboxylic acids with replacement of carboxyl groups by cyano groups · 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 | C07C253/22 |
| Official title | by reaction of ammonia with carboxylic acids with replacement of carboxyl groups by cyano groups |
| Display label | by reaction of ammonia with carboxylic acids with replacement of carboxyl groups by cyano groups |
| Total patents | 39 |
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 | 2 |
| 2016 | 1 |
| 2018 | 2 |
| 2019 | 4 |
| 2020 | 2 |
| 2021 | 8 |
| 2022 | 5 |
| 2023 | 7 |
| 2024 | 4 |
| 2025 | 3 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Systems and methods for producing nitriles
US-2025243153-A1 · Jul 31, 2025 · US
Systems and methods for producing nitriles
US-12286390-B2 · Apr 29, 2025 · US
High purity 2-naphthylacetonitrile and method for producing same
US-12187664-B2 · Jan 7, 2025 · US
Systems and methods for producing nitriles
US-2024343683-A1 · Oct 17, 2024 · US
High purity 2-naphthylacetonitrile and method for producing same
US-12084404-B2 · Sep 10, 2024 · US
Method for nitrilation reaction of acrylic acid ester
US-2024199537-A1 · Jun 20, 2024 · US
Process for purifying aminocapronitrile
US-2024150278-A1 · May 9, 2024 · US
Emulsion polymerization of nitriles and other compounds
US-11732385-B2 · Aug 22, 2023 · US
High purity 2-naphthylacetonitrile and method for producing same
US-2023227400-A1 · Jul 20, 2023 · US
High purity 2-naphthylacetonitrile and method for producing same
US-11643386-B2 · May 9, 2023 · US
Production method for cyclohexanedicarboxylic acid compound, dicyanocyclohexane compound and bis(aminomethyl)cyclohexane compound
US-11584705-B2 · Feb 21, 2023 · US
Method for producing dicyanocyclohexane and bis(aminomethyl)cyclohexane
US-11572338-B2 · Feb 7, 2023 · US
Process for preparing nitrile intermediates for nitrogen-containing chelators
US-2023008538-A1 · Jan 12, 2023 · US
Method for preparing dicyanoalkane and bis(aminomethyl) alkane
US-11542222-B2 · Jan 3, 2023 · US
Production method for 1,4-cyclohexanedicarboxylic acid derivative, 1,4-dicyanocyclohexane and 1,4-bis(aminomethyl)cyclohexane
US-11472765-B2 · Oct 18, 2022 · US
Method for producing catalyst and method for producing unsaturated nitrile
US-11446643-B2 · Sep 20, 2022 · US
High purity 2-naphthylacetonitrile and method for producing same
US-2022281806-A1 · Sep 8, 2022 · US
Production method for dicyanocyclohexane
US-11352318-B2 · Jun 7, 2022 · US
High purity 2-naphthylacetonitrile and method for producing same
US-2022009880-A1 · Jan 13, 2022 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07C253/22?
- CPC C07C253/22 is the Cooperative Patent Classification code for “by reaction of ammonia with carboxylic acids with replacement of carboxyl groups by cyano groups.”
- How many patents are filed under CPC C07C253/22 (by reaction of ammonia with carboxylic acids with replacement of carboxyl groups by cyano groups)?
- Our database includes 39 publications tagged with this CPC code.
- Is patent activity under CPC C07C253/22 growing?
- Publication counts under this code: 4 in 2024 vs 3 in 2025 (latest complete years).