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Expired European patentEurope

Magnetic head construction

EP 0085794 B1 · Applicant: North American Philips Corporation

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Overview

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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 December 20, 1982 and granted July 10, 1985. A European patent lasts at most 20 years from filing, so its term ended December 20, 2002.
  • 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 June 20, 2008.
  • 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.
FiledDecember 20, 1982
PublishedAugust 17, 1983
GrantedJuly 10, 1985
Term endedDecember 20, 2002
Application numberEP 82201624
Classification (CPC)G11B5/105

Timeline

Timeline From EPO dates

1983198519871989199119931995199719992001Application filedDec 20, 1982PublishedAug 17, 1983Patent grantedJuly 10, 1985Term endedDec 20, 2002

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.