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Expired European patentEurope

Waveguide connection arrangements

EP 0128686 B1 · Applicant: THE MARCONI COMPANY LIMITED

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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 May 25, 1984 and granted December 7, 1988. A European patent lasts at most 20 years from filing, so its term ended May 25, 2004.
  • 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 November 25, 2009.
  • 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.
FiledMay 25, 1984
PublishedDecember 19, 1984
GrantedDecember 7, 1988
Term endedMay 25, 2004
Application numberEP 84303543
Classification (CPC)H01P1/042

Timeline

Timeline From EPO dates

1985198719891991199319951997199920012003Application filedMay 25, 1984PublishedDec 19, 1984Patent grantedDec 7, 1988Term endedMay 25, 2004

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.