Expired European patentEurope
Process to prepare epsilon-caprolactam from 6-aminocaproic acid
EP 0882017 B1 · Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
Overview
The published document from the EPO: abstract, claims, description and drawings. Open it full size
Read the whole patent
Listed from its EPO record in Patent Yard's archive of European patents past their term. Its claims, description and drawings are in the EPO PDF and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed February 12, 1997 and granted January 16, 2002. A European patent lasts at most 20 years from filing, so its term ended February 12, 2017.
- A supplementary protection certificate, which can extend a medicine or crop-protection patent, adds at most five and a half years, so even that would have ended by August 12, 2022.
- We check European rights only. A US or other national patent in its family could still be in force: check its family on Espacenet or Google Patents.
FiledFebruary 12, 1997
PublishedDecember 9, 1998
GrantedJanuary 16, 2002
Term endedFebruary 12, 2017
Application numberEP 97902744
Classification (CPC)C07D201/08
Timeline
Timeline From EPO dates
Sources & verification
Official EPO records
Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.