Patent Yard Sign in
Expired European patentEurope

Write-once information recording medium and coloring matter therefor

EP 1585124 B1 · Applicant: KABUSHIKI KAISHA TOSHIBA

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.

Why it's free to use

  • Filed March 30, 2005 and granted June 24, 2009. A European patent lasts at most 20 years from filing, so its term ended March 30, 2025.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • 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.
FiledMarch 30, 2005
PublishedOctober 12, 2005
GrantedJune 24, 2009
Term endedMarch 30, 2025
Application numberEP 05102522
Classification (CPC)G11B7/246 +2 more

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedMarch 30, 2005PublishedOct 12, 2005Patent grantedJune 24, 2009Term endedMarch 30, 2025

Sources & verification