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Expired European patentEurope

Electromechanical band-pass filter with coupled resonators

EP 0064435 B1 · Applicant: Detaint, Jacques

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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 April 15, 1982 and granted August 26, 1987. A European patent lasts at most 20 years from filing, so its term ended April 15, 2002.
  • 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 15, 2007.
  • 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 15, 1982
PublishedNovember 10, 1982
GrantedAugust 26, 1987
Term endedApril 15, 2002
Application numberEP 82400668
Classification (CPC)H03H9/581

Timeline

Timeline From EPO dates

1983198519871989199119931995199719992001Application filedApril 15, 1982PublishedNov 10, 1982Patent grantedAug 26, 1987Term endedApril 15, 2002

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.