Patent Yard Sign in
European application, never grantedEurope

9-Halo-8-hydroxy-4-methyl-4-nonenoic acids, derivatives thereof and a process for their preparation

EP 0054909 A2 · Applicant: MITSUBISHI KASEI CORPORATION

EPO PDF

Overview

Drawings and full text

The claims, description and any drawings are in the published document.

Open the EPO PDF

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 December 16, 1981 and never granted as a European patent. Had it been granted, its 20-year term would have ended December 16, 2001.
  • 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 June 16, 2007.
  • 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.
FiledDecember 16, 1981
PublishedJune 30, 1982
GrantedNever granted
Term endedDecember 16, 2001
Application numberEP 81110514
Classification (CPC)C07C29/36 +2 more

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.