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Expired European patentEurope

Driving method for an electron beam emitting device

EP 0628982 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 October 12, 1988 and granted January 14, 1998. A European patent lasts at most 20 years from filing, so its term ended October 12, 2008.
  • 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 April 12, 2014.
  • 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.
FiledOctober 12, 1988
PublishedDecember 14, 1994
GrantedJanuary 14, 1998
Term endedOctober 12, 2008
Application numberEP 94114636
Classification (CPC)H01J1/316 +2 more

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedOct 12, 1988PublishedDec 14, 1994Patent grantedJan 14, 1998Term endedOct 12, 2008

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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