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Expired European patentEurope

Apparatus with expandable tube bundle

EP 0032893 B1 · Applicant: E.I. DU PONT DE NEMOURS AND COMPANY

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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 July 11, 1979 and granted March 21, 1984. A European patent lasts at most 20 years from filing, so its term ended July 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 January 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.
FiledJuly 11, 1979
PublishedAugust 5, 1981
GrantedMarch 21, 1984
Term endedJuly 11, 1999
Application numberEP 79901438
Classification (CPC)F28F21/062 +1 more

Timeline

Timeline From EPO dates

1980198219841986198819901992199419961998Application filedJuly 11, 1979PublishedAug 5, 1981Patent grantedMarch 21, 1984Term endedJuly 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.