Method for producing ε-caprolactam
US-12365652-B2 · Jul 22, 2025 · US
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Formation of amino and carboxyl groups
Formation of amino and carboxyl 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 | C07C227/12 |
| Official title | Formation of amino and carboxyl groups |
| Display label | Formation of amino and carboxyl groups |
| Total patents | 23 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 3 |
| 2017 | 1 |
| 2019 | 1 |
| 2020 | 2 |
| 2021 | 2 |
| 2022 | 2 |
| 2023 | 1 |
| 2024 | 6 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Means and methods for manufacturing racemic alanine for the mgda synthesis
US-2024301453-A1 · Sep 12, 2024 · US
Substituted tricyclic heterocyclic compounds as metallo-beta-lactamase inhibitors
US-2024279176-A1 · Aug 22, 2024 · US
Catalyst for pir/pur foam production
US-2024182627-A1 · Jun 6, 2024 · US
Positron imaging tomography imaging agent composition adn method for bacterial infection
US-2024115221-A1 · Apr 11, 2024 · US
Composition or material, a process for its production and uses thereof
US-2024009654-A1 · Jan 11, 2024 · US
Positron imaging tomography imaging agent composition and method for bacterial infection
US-11857352-B2 · Jan 2, 2024 · US
Full continuous-flow preparation method of L-carnitine
US-11827581-B2 · Nov 28, 2023 · US
Method for producing epsilon-caprolactam
US-2022411379-A1 · Dec 29, 2022 · US
Full continuous-flow preparation method of l-carnitine
US-2022267253-A1 · Aug 25, 2022 · US
Thermo-thickening compounds for non-polar liquid
US-11161807-B2 · Nov 2, 2021 · US
Building blocks for stapled peptides
US-11091427-B2 · Aug 17, 2021 · US
Building blocks for stapled peptides
US-2020031760-A1 · Jan 30, 2020 · US
Thermo-thickening compounds for non-polar liquid
US-2020010410-A1 · Jan 9, 2020 · US
Positron imaging tomography imaging agent composition and method for bacterial infection
US-2019209103-A1 · Jul 11, 2019 · US
Conductive polymer composition, coated article, patterning process and substrate
US-9778570-B2 · Oct 3, 2017 · US
Conductive polymer composition, coated article, patterning process and substrate
US-2016223909-A1 · Aug 4, 2016 · US
Optical resolution methods for bicyclic compounds using enzymes
US-9394235-B2 · Jul 19, 2016 · US
Cu-mediated annulation for the production of 1-amino-2-naphthalenecarboxylic acid derivatives
US-9233911-B2 · Jan 12, 2016 · US
Optical resolution methods for bicyclic compounds using asymmetric catalysts
US-9035103-B2 · May 19, 2015 · US