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Expired European patentEurope

Device for sound recording and reproduction using flat rectangular sound carriers

EP 0186848 B1 · Applicant: TEPRO Technologie und Produktentwicklung für Elektronik und Automatisierung GmbH & Co.

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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 December 17, 1985 and granted March 15, 1989. A European patent lasts at most 20 years from filing, so its term ended December 17, 2005.
  • 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 June 17, 2011.
  • 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.
FiledDecember 17, 1985
PublishedJuly 9, 1986
GrantedMarch 15, 1989
Term endedDecember 17, 2005
Application numberEP 85116088
Classification (CPC)G11B25/04

Timeline

Timeline From EPO dates

1986198819901992199419961998200020022004Application filedDec 17, 1985PublishedJuly 9, 1986Patent grantedMarch 15, 1989Term endedDec 17, 2005

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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