Patent Yard Sign in
Expired European patentEurope

Loudspeaker

EP 1662838 B1 · Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

EPO PDF

Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

Read the whole patent

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.

Google PatentsEPO PDF

Why it's free to use

  • Filed August 10, 2004 and granted May 7, 2008. A European patent lasts at most 20 years from filing, so its term ended August 10, 2024.
  • 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.
FiledAugust 10, 2004
PublishedMay 31, 2006
GrantedMay 7, 2008
Term endedAugust 10, 2024
Application numberEP 06002706
Classification (CPC)H04R9/06 +2 more

Timeline

Timeline From EPO dates

2005200720092011201320152017201920212023Application filedAug 10, 2004PublishedMay 31, 2006Patent grantedMay 7, 2008Term endedAug 10, 2024

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.