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Expired European patentEurope

Gated electron emission device and method of fabrication thereof

EP 1018131 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 June 5, 1997 and granted October 20, 2010. A European patent lasts at most 20 years from filing, so its term ended June 5, 2017.
  • 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 December 5, 2022.
  • 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.
FiledJune 5, 1997
PublishedJuly 12, 2000
GrantedOctober 20, 2010
Term endedJune 5, 2017
Application numberEP 97926809
Classification (CPC)H01J9/025

Timeline

Timeline From EPO dates

1998200020022004200620082010201220142016Application filedJune 5, 1997PublishedJuly 12, 2000Patent grantedOct 20, 2010Term endedJune 5, 2017

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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