Patent Yard Sign in
Expired European patentEurope

Polyetherthioether ester amides; process for their preparation

EP 0288331 B1 · Applicant: ELF ATOCHEM S.A.

EPO PDF

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.

Google PatentsEPO PDF

Why it's free to use

  • Filed February 17, 1988 and granted January 29, 1992. A European patent lasts at most 20 years from filing, so its term ended February 17, 2008.
  • 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 17, 2013.
  • 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 17, 1988
PublishedOctober 26, 1988
GrantedJanuary 29, 1992
Term endedFebruary 17, 2008
Application numberEP 88400364
Classification (CPC)C08G69/44

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedFeb 17, 1988PublishedOct 26, 1988Patent grantedJan 29, 1992Term endedFeb 17, 2008

Sources & verification

Official EPO records

Full published documentClaims, description and drawings as a PDF.EPOEuropean Patent RegisterProcedure, status, file inspection and legal events.EPOLinked open EP data recordThe bibliographic record this page is built from.EPO

Cross-check elsewhere

Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.comEspacenetNational family members and their legal status.European Patent Office

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.