Patent Yard Sign in
Expired European patentEurope

Disc drive apparatus

EP 0404589 B1 · Applicant: SONY CORPORATION

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 June 22, 1990 and granted September 11, 1996. A European patent lasts at most 20 years from filing, so its term ended June 22, 2010.
  • 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 December 22, 2015.
  • 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.
FiledJune 22, 1990
PublishedDecember 27, 1990
GrantedSeptember 11, 1996
Term endedJune 22, 2010
Application numberEP 90306842
Classification (CPC)G11B17/0436

Timeline

Timeline From EPO dates

1991199319951997199920012003200520072009Application filedJune 22, 1990PublishedDec 27, 1990Patent grantedSep 11, 1996Term endedJune 22, 2010

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.