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Expired European patentEurope

Disk recording medium, disk drive apparatus, reproducing method, and disk manufacturing method

EP 1734529 B1 · Applicant: SONY 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 4, 2002 and granted February 29, 2012. A European patent lasts at most 20 years from filing, so its term ended October 4, 2022.
  • 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.
FiledOctober 4, 2002
PublishedDecember 20, 2006
GrantedFebruary 29, 2012
Term endedOctober 4, 2022
Application numberEP 06076594
Classification (CPC)G11B20/22 +2 more

Timeline

Timeline From EPO dates

2003200520072009201120132015201720192021Application filedOct 4, 2002PublishedDec 20, 2006Patent grantedFeb 29, 2012Term endedOct 4, 2022

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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