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Expired European patentEurope

Magnetic recording medium

EP 0107985 B1 · Applicant: KONICA 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 October 31, 1983 and granted August 26, 1987. A European patent lasts at most 20 years from filing, so its term ended October 31, 2003.
  • 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 1, 2009.
  • 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 31, 1983
PublishedMay 9, 1984
GrantedAugust 26, 1987
Term endedOctober 31, 2003
Application numberEP 83306619
Classification (CPC)G11B5/714

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedOct 31, 1983PublishedMay 9, 1984Patent grantedAug 26, 1987Term endedOct 31, 2003

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.