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Expired European patentEurope

Electrodynamic electroacoustic transducer and electronic device

EP 1843630 B1 · Applicant: Panasonic Corporation

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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 January 26, 2006 and granted February 22, 2012. A European patent lasts at most 20 years from filing, so its term ended January 26, 2026.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • 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.
FiledJanuary 26, 2006
PublishedOctober 10, 2007
GrantedFebruary 22, 2012
Term endedJanuary 26, 2026
Application numberEP 06712422
Classification (CPC)H04R9/025

Timeline

Timeline From EPO dates

2007200920112013201520172019202120232025Application filedJan 26, 2006PublishedOct 10, 2007Patent grantedFeb 22, 2012Term endedJan 26, 2026

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.