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EP 0334650 B1 · Applicant: QUANTUM CORPORATION

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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 23, 1989 and granted December 7, 1994. A European patent lasts at most 20 years from filing, so its term ended March 23, 2009.
  • 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 September 23, 2014.
  • 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 23, 1989
PublishedSeptember 27, 1989
GrantedDecember 7, 1994
Term endedMarch 23, 2009
Application numberEP 89302895
Classification (CPC)G11B21/16 +2 more

Timeline

Timeline From EPO dates

1990199219941996199820002002200420062008Application filedMarch 23, 1989PublishedSep 27, 1989Patent grantedDec 7, 1994Term endedMarch 23, 2009

Sources & verification