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Expired European patentEurope

An electrodynamic transducer

EP 0775432 B1 · Applicant: KIRK ACOUSTICS A/S

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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 February 10, 1995 and granted May 13, 1998. A European patent lasts at most 20 years from filing, so its term ended February 10, 2015.
  • 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 August 10, 2020.
  • 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.
FiledFebruary 10, 1995
PublishedMay 28, 1997
GrantedMay 13, 1998
Term endedFebruary 10, 2015
Application numberEP 95909658
Classification (CPC)H04R9/06

Timeline

Timeline From EPO dates

1996199820002002200420062008201020122014Application filedFeb 10, 1995PublishedMay 28, 1997Patent grantedMay 13, 1998Term endedFeb 10, 2015

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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