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Expired European patentEurope

Oscillator with a dielectric resonator and electronic tuning by a varactor, especially for the 22 GHz range

EP 0287010 B1 · Applicant: ALCATEL TELSPACE

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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 April 11, 1988 and granted May 20, 1992. A European patent lasts at most 20 years from filing, so its term ended April 11, 2008.
  • 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 October 11, 2013.
  • 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.
FiledApril 11, 1988
PublishedOctober 19, 1988
GrantedMay 20, 1992
Term endedApril 11, 2008
Application numberEP 88105715
Classification (CPC)H03B5/1876

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedApril 11, 1988PublishedOct 19, 1988Patent grantedMay 20, 1992Term endedApril 11, 2008

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

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