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Expired European patentEurope

Anodic bonding process with light irradiation

EP 0539741 B1 · Applicant: CANON KABUSHIKI KAISHA

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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 September 29, 1992 and granted January 15, 2003. A European patent lasts at most 20 years from filing, so its term ended September 29, 2012.
  • 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 March 29, 2018.
  • 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.
FiledSeptember 29, 1992
PublishedMay 5, 1993
GrantedJanuary 15, 2003
Term endedSeptember 29, 2012
Application numberEP 92116628
Classification (CPC)H10P72/0441 +2 more

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedSep 29, 1992PublishedMay 5, 1993Patent grantedJan 15, 2003Term endedSep 29, 2012

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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