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Expired European patentEurope

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EP 0298201 B1 · Applicant: YAMAHA 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 May 14, 1985 and granted August 5, 1992. A European patent lasts at most 20 years from filing, so its term ended May 14, 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 November 14, 2010.
  • 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.
FiledMay 14, 1985
PublishedJanuary 11, 1989
GrantedAugust 5, 1992
Term endedMay 14, 2005
Application numberEP 88104681
Classification (CPC)G11B17/041 +1 more

Timeline

Timeline From EPO dates

1986198819901992199419961998200020022004Application filedMay 14, 1985PublishedJan 11, 1989Patent grantedAug 5, 1992Term endedMay 14, 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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.