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Expired European patentEurope

Protection of electron-emissive elements prior to removing excess emitter material during fabrication of electron-emitting device

EP 1036403 B1 · Applicant: Candescent Technologies Corporation

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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 27, 1998 and granted November 29, 2006. A European patent lasts at most 20 years from filing, so its term ended October 27, 2018.
  • 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 27, 2024.
  • 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 27, 1998
PublishedSeptember 20, 2000
GrantedNovember 29, 2006
Term endedOctober 27, 2018
Application numberEP 98954016
Classification (CPC)H01J9/025

Timeline

Timeline From EPO dates

1999200120032005200720092011201320152017Application filedOct 27, 1998PublishedSep 20, 2000Patent grantedNov 29, 2006Term endedOct 27, 2018

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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