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Expired European patentEurope

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EP 0023236 B1 · Applicant: Maffei, Carlo

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Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

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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 September 25, 1979 and granted January 25, 1984. A European patent lasts at most 20 years from filing, so its term ended September 25, 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 March 25, 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.
FiledSeptember 25, 1979
PublishedFebruary 4, 1981
GrantedJanuary 25, 1984
Term endedSeptember 25, 1999
Application numberEP 79830032
Classification (CPC)A61J11/00 +1 more

Timeline

Timeline From EPO dates

1980198219841986198819901992199419961998Application filedSep 25, 1979PublishedFeb 4, 1981Patent grantedJan 25, 1984Term endedSep 25, 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.