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Expired European patentEurope

Sound reproducing apparatus for use in vehicle

EP 0252522 B1 · Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

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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 July 10, 1987 and granted March 10, 1993. A European patent lasts at most 20 years from filing, so its term ended July 10, 2007.
  • 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 January 10, 2013.
  • 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.
FiledJuly 10, 1987
PublishedJanuary 13, 1988
GrantedMarch 10, 1993
Term endedJuly 10, 2007
Application numberEP 87110010
Classification (CPC)H04R1/2857

Timeline

Timeline From EPO dates

1988199019921994199619982000200220042006Application filedJuly 10, 1987PublishedJan 13, 1988Patent grantedMarch 10, 1993Term endedJuly 10, 2007

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.