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Expired European patentEurope

Transducer assembly and loudspeaker including rheological material

EP 1733593 B1 · Applicant: Sony Ericsson Mobile Communications AB

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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 November 12, 2004 and granted July 8, 2009. A European patent lasts at most 20 years from filing, so its term ended November 12, 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.
FiledNovember 12, 2004
PublishedDecember 20, 2006
GrantedJuly 8, 2009
Term endedNovember 12, 2024
Application numberEP 04821931
Classification (CPC)H04R7/045

Timeline

Timeline From EPO dates

2005200720092011201320152017201920212023Application filedNov 12, 2004PublishedDec 20, 2006Patent grantedJuly 8, 2009Term endedNov 12, 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

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