Patent Yard Sign in
Expired European patentEurope

Pharmaceutical composition containing all-E- or 13-Z-7,8-dehydro-retinoic acid and process for its preparation

EP 0010208 B1 · Applicant: BASF Aktiengesellschaft

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 September 28, 1979 and granted August 11, 1982. A European patent lasts at most 20 years from filing, so its term ended September 28, 1999.
  • 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 March 28, 2005.
  • 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.
FiledSeptember 28, 1979
PublishedApril 30, 1980
GrantedAugust 11, 1982
Term endedSeptember 28, 1999
Application numberEP 79103681
Classification (CPC)C07C403/20 +2 more

Timeline

Timeline From EPO dates

1980198219841986198819901992199419961998Application filedSep 28, 1979PublishedApril 30, 1980Patent grantedAug 11, 1982Term endedSep 28, 1999

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.