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Expired European patentEurope

Monitoring and adjusting a motor current in a disk data drive to optimize a disk rotation speed

EP 1006524 B1 · Applicant: DEUTSCHE THOMSON-BRANDT GMBH

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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 November 22, 1999 and granted February 22, 2012. A European patent lasts at most 20 years from filing, so its term ended November 22, 2019.
  • 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 May 22, 2025.
  • 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.
FiledNovember 22, 1999
PublishedJune 7, 2000
GrantedFebruary 22, 2012
Term endedNovember 22, 2019
Application numberEP 99123075
Classification (CPC)G11B19/28

Timeline

Timeline From EPO dates

2000200220042006200820102012201420162018Application filedNov 22, 1999PublishedJune 7, 2000Patent grantedFeb 22, 2012Term endedNov 22, 2019

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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