Patent Yard Sign in
Expired European patentEurope

Colour selection electrode with elongate apertures in a colour display tube

EP 0001673 B1 · Applicant: Philips Electronics N.V.

EPO PDF

Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

Read the whole patent

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.

Google PatentsEPO PDF

Why it's free to use

  • Filed October 23, 1978 and granted January 7, 1981. A European patent lasts at most 20 years from filing, so its term ended October 23, 1998.
  • 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 23, 2004.
  • 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 23, 1978
PublishedMay 2, 1979
GrantedJanuary 7, 1981
Term endedOctober 23, 1998
Application numberEP 78200260
Classification (CPC)H01J29/076

Timeline

Timeline From EPO dates

1979198119831985198719891991199319951997Application filedOct 23, 1978PublishedMay 2, 1979Patent grantedJan 7, 1981Term endedOct 23, 1998

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

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.