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Expired European patentEurope

Microwave phase shifter, especially in the millimeter wave range, with a piezoelectric control

EP 0206846 B1 · Applicant: Office National d'Etudes et de Recherches Aérospatiales (O.N.E.R.A.)

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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 23, 1986 and granted November 6, 1991. A European patent lasts at most 20 years from filing, so its term ended April 23, 2006.
  • 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 23, 2011.
  • 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 23, 1986
PublishedDecember 30, 1986
GrantedNovember 6, 1991
Term endedApril 23, 2006
Application numberEP 86400891
Classification (CPC)H01Q3/443 +2 more

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedApril 23, 1986PublishedDec 30, 1986Patent grantedNov 6, 1991Term endedApril 23, 2006

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.