Patent Yard Sign in
Expired European patentEurope

Hydroxy-aryl metal chelates for diagnostic nmr imaging

EP 0489869 B1 · Applicant: THE GENERAL HOSPITAL CORPORATION

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 August 28, 1990 and granted November 11, 1998. A European patent lasts at most 20 years from filing, so its term ended August 28, 2010.
  • 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 February 28, 2016.
  • 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.
FiledAugust 28, 1990
PublishedJune 17, 1992
GrantedNovember 11, 1998
Term endedAugust 28, 2010
Application numberEP 90914613
Classification (CPC)A61K49/06 +1 more

Timeline

Timeline From EPO dates

1991199319951997199920012003200520072009Application filedAug 28, 1990PublishedJune 17, 1992Patent grantedNov 11, 1998Term endedAug 28, 2010

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.