Patent Yard Sign in
Expired European patentEurope

Purfication of liquid paraffins

EP 0164905 B1 · Applicant: KUWAIT INSTITUTE FOR SCIENTIFIC RESEARCH

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 May 10, 1985 and granted January 11, 1989. A European patent lasts at most 20 years from filing, so its term ended May 10, 2005.
  • 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 November 10, 2010.
  • 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.
FiledMay 10, 1985
PublishedDecember 18, 1985
GrantedJanuary 11, 1989
Term endedMay 10, 2005
Application numberEP 85303344
Classification (CPC)C10G25/03

Timeline

Timeline From EPO dates

1986198819901992199419961998200020022004Application filedMay 10, 1985PublishedDec 18, 1985Patent grantedJan 11, 1989Term endedMay 10, 2005

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.