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Expired European patentEurope

An automatic tape cassette loading device

EP 0227446 B1 · Applicant: SONY CORPORATION

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Overview

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

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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 18, 1986 and granted January 22, 1992. A European patent lasts at most 20 years from filing, so its term ended December 18, 2006.
  • 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 18, 2012.
  • 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 18, 1986
PublishedJuly 1, 1987
GrantedJanuary 22, 1992
Term endedDecember 18, 2006
Application numberEP 86309938
Classification (CPC)G11B15/6835

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedDec 18, 1986PublishedJuly 1, 1987Patent grantedJan 22, 1992Term endedDec 18, 2006

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.