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Expired European patentEurope

Control device for inflating a sealing ring placed between two tubes sliding one within the other

EP 0018464 B1 · Applicant: COMPAGNIE D'ETUDES ET DE REALISATION DE CYBERNETIQUE INDUSTRIELLE

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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 12, 1978 and granted December 2, 1981. A European patent lasts at most 20 years from filing, so its term ended September 12, 1998.
  • 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 12, 2004.
  • 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 12, 1978
PublishedNovember 12, 1980
GrantedDecember 2, 1981
Term endedSeptember 12, 1998
Application numberEP 80100252
Classification (CPC)F16L17/10 +2 more

Timeline

Timeline From EPO dates

1979198119831985198719891991199319951997Application filedSep 12, 1978PublishedNov 12, 1980Patent grantedDec 2, 1981Term endedSep 12, 1998

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.