High-yield production of epsilon-caprolactam from nylon 6 plastic waste via ammonia-assisted depolymerization
US-2025376442-A1 · Dec 11, 2025 · US
This page is not indexed by search engines while we improve data quality.
by depolymerising polyamides
by depolymerising polyamides · 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 | C07D201/12 |
| Official title | by depolymerising polyamides |
| Display label | by depolymerising polyamides |
| Total patents | 14 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity appears to be growing based on the most recent years.
| Year | Patents |
|---|---|
| 2022 | 2 |
| 2023 | 1 |
| 2024 | 2 |
| 2025 | 9 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method of producing thermoplastic resin
US-2025282925-A1 · Sep 11, 2025 · US
METHOD OF COLLECTING e-CAPROLACTAM AND POLYAMIDE 6 OLIGOMER, AND METHOD OF PRODUCING POLYAMIDE 6
US-2025257037-A1 · Aug 14, 2025 · US
Water removal in a process for hydrolytically depolymerizing a polyamide
US-2025223417-A1 · Jul 10, 2025 · US
Heat integration in a process for hydrolytically depolymerizing a polyamide
US-2025215180-A1 · Jul 3, 2025 · US
Process for hydrolytically depolymerizing a polyamide
US-2025197592-A1 · Jun 19, 2025 · US
Method of producing epsilon-caprolactam and method of producing polyamide 6
US-2025122352-A1 · Apr 17, 2025 · US
Separation of impurities in a process for hydrolytically depolymerizing a polyamide
US-2025100965-A1 · Mar 27, 2025 · US
Method of producing epsilon-caprolactam and method of producing polyamide 6
US-2025019516-A1 · Jan 16, 2025 · US
METHOD OF COLLECTING FIBROUS FILLING MATERIAL AND e-CAPROLACTAM, AND METHOD OF PRODUCING POLYAMIDE 6
US-2024352217-A1 · Oct 24, 2024 · US
Compositions and methods of preparation thereof
US-2024092719-A1 · Mar 21, 2024 · US
Compositions and methods of preparation thereof
US-11827591-B2 · Nov 28, 2023 · US
Method for recycling glass fibre reinforced plastic
US-2022184856-A1 · Jun 16, 2022 · US
Compositions and methods of preparation thereof
US-2022135510-A1 · May 5, 2022 · US