Process for the production of epsilon caprolactam from 6-aminocaproic acid
US-11753372-B2 · Sep 12, 2023 · US
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from carboxylic acids or derivatives thereof, e.g. hydroxy carboxylic acids, lactones or nitriles
from carboxylic acids or derivatives thereof, e.g. hydroxy carboxylic acids, lactones or nitriles · 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 | C07D201/08 |
| Official title | from carboxylic acids or derivatives thereof, e.g. hydroxy carboxylic acids, lactones or nitriles |
| Display label | from carboxylic acids or derivatives thereof, e.g. hydroxy carboxylic acids, lactones or nitriles |
| Total patents | 24 |
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 | 1 |
| 2016 | 1 |
| 2017 | 2 |
| 2018 | 3 |
| 2019 | 5 |
| 2020 | 5 |
| 2021 | 3 |
| 2022 | 2 |
| 2023 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Oxidation catalysts
US-11596927-B2 · Mar 7, 2023 · US
Process for the production of epsilon caprolactam from 6- aminocaproic acid
US-2022089536-A1 · Mar 24, 2022 · US
Preparation of 6-aminocaproic acid from 5-formyl valeric acid
US-2022064679-A1 · Mar 3, 2022 · US
Method for producing ϵ-caprolactam
US-11149001-B2 · Oct 19, 2021 · US
Preparation of caprolactam from 6-amino caproic acid obtained in a fermentation process
US-2021171459-A1 · Jun 10, 2021 · US
Oxidation catalysts
US-2021094020-A1 · Apr 1, 2021 · US
Oxidation catalysts
US-10807074-B2 · Oct 20, 2020 · US
Preparation of 6-aminocaproic acid from 5-formyl valeric acid
US-2020291436-A1 · Sep 17, 2020 · US
Method for preparing cis-alkoxy-substituted spirocyclic 1-H-pyrrolidine-2,4-dione derivatives
US-10577320-B2 · Mar 3, 2020 · US
METHOD FOR PRODUCING epsilon-CAPROLACTAM
US-2020062704-A1 · Feb 27, 2020 · US
Means and methods for lignin pyrolysis
US-2020017771-A1 · Jan 16, 2020 · US
Process for the preparation of lactams from glyoxalic acid
US-10377707-B2 · Aug 13, 2019 · US
Method of producing epsilon-caprolactam
US-10364218-B2 · Jul 30, 2019 · US
Preparation of 6-aminocaproic acid from 5-formyl valeric acid
US-2019218580-A1 · Jul 18, 2019 · US
Method for preparing cis-alkoxy-substituted spirocyclic 1-H-pyrrolidine-2,4-dione derivatives
US-2019144385-A1 · May 16, 2019 · US
Method for producing epsilon-caprolactam
US-10196352-B2 · Feb 5, 2019 · US
Method of producing epsilon-caprolactam
US-2018237389-A1 · Aug 23, 2018 · US
Oxidation Catalysts
US-2018214853-A1 · Aug 2, 2018 · US
Preparation of 6-aminocaproic acid from 5-formyl valeric acid
US-2018100172-A1 · Apr 12, 2018 · US