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Expired European patentEurope

Azo dye compounds, ink containing the same, and recording method and instrument using the ink

EP 0626428 B1 · Applicant: CANON KABUSHIKI KAISHA

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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 May 17, 1994 and granted October 11, 2000. A European patent lasts at most 20 years from filing, so its term ended May 17, 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 November 17, 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.
FiledMay 17, 1994
PublishedNovember 30, 1994
GrantedOctober 11, 2000
Term endedMay 17, 2014
Application numberEP 94107608
Classification (CPC)C09B43/12 +2 more

Timeline

Timeline From EPO dates

1995199719992001200320052007200920112013Application filedMay 17, 1994PublishedNov 30, 1994Patent grantedOct 11, 2000Term endedMay 17, 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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