Patent Yard Sign in
Expired European patentEurope

Ionic liquids

EP 1165486 B1 · Applicant: UNIVERSITY OF LEICESTER

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 March 23, 2000 and granted June 22, 2005. A European patent lasts at most 20 years from filing, so its term ended March 23, 2020.
  • 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 September 23, 2025.
  • 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.
FiledMarch 23, 2000
PublishedJanuary 2, 2002
GrantedJune 22, 2005
Term endedMarch 23, 2020
Application numberEP 00911134
Classification (CPC)C07C211/65 +2 more

Timeline

Timeline From EPO dates

2001200320052007200920112013201520172019Application filedMarch 23, 2000PublishedJan 2, 2002Patent grantedJune 22, 2005Term endedMarch 23, 2020

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.