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Expired European patentEurope

Method for surface treatment of ink jet recording head

EP 0268213 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 November 12, 1987 and granted September 1, 1993. A European patent lasts at most 20 years from filing, so its term ended November 12, 2007.
  • 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 May 12, 2013.
  • 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.
FiledNovember 12, 1987
PublishedMay 25, 1988
GrantedSeptember 1, 1993
Term endedNovember 12, 2007
Application numberEP 87116729
Classification (CPC)B41J2/1606

Timeline

Timeline From EPO dates

1988199019921994199619982000200220042006Application filedNov 12, 1987PublishedMay 25, 1988Patent grantedSep 1, 1993Term endedNov 12, 2007

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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