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Expired European patentEurope

Speech recognition system with improved rejection of words and sounds not contained in the system vocabulary

EP 0625775 B1 · Applicant: International Business Machines 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 March 28, 1994 and granted September 6, 2000. A European patent lasts at most 20 years from filing, so its term ended March 28, 2014.
  • 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 September 28, 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.
FiledMarch 28, 1994
PublishedNovember 23, 1994
GrantedSeptember 6, 2000
Term endedMarch 28, 2014
Application numberEP 94104846
Classification (CPC)G10L25/78

Timeline

Timeline From EPO dates

1995199719992001200320052007200920112013Application filedMarch 28, 1994PublishedNov 23, 1994Patent grantedSep 6, 2000Term endedMarch 28, 2014

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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