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Expired European patentEurope

Solutions of X-ray contrast agents

EP 0012926 B1 · Applicant: Byk Gulden Lomberg Chemische Fabrik GmbH

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Overview

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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.

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Why it's free to use

  • Filed December 11, 1979 and granted March 7, 1984. A European patent lasts at most 20 years from filing, so its term ended December 11, 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 June 11, 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.
FiledDecember 11, 1979
PublishedJuly 9, 1980
GrantedMarch 7, 1984
Term endedDecember 11, 1999
Application numberEP 79105091
Classification (CPC)A61K49/0447

Timeline

Timeline From EPO dates

1980198219841986198819901992199419961998Application filedDec 11, 1979PublishedJuly 9, 1980Patent grantedMarch 7, 1984Term endedDec 11, 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.