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Expired European patentEurope

Grand piano-like keyboard instrument for selectively producing acoustic sound and synthesized sound

EP 0655729 B1 · Applicant: YAMAHA CORPORATION

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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 December 21, 1993 and granted May 9, 2001. A European patent lasts at most 20 years from filing, so its term ended December 21, 2013.
  • 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 21, 2019.
  • 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 21, 1993
PublishedMay 31, 1995
GrantedMay 9, 2001
Term endedDecember 21, 2013
Application numberEP 93120645
Classification (CPC)G10C5/10

Timeline

Timeline From EPO dates

1994199619982000200220042006200820102012Application filedDec 21, 1993PublishedMay 31, 1995Patent grantedMay 9, 2001Term endedDec 21, 2013

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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