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Expired European patentEurope

Granulated particles for magnetic particles for magnetic recording and process for producing the same

EP 0582452 B1 · Applicant: TODA KOGYO CORP.

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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 August 2, 1993 and granted October 14, 1998. A European patent lasts at most 20 years from filing, so its term ended August 2, 2013.
  • 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 February 2, 2019.
  • 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.
FiledAugust 2, 1993
PublishedFebruary 9, 1994
GrantedOctober 14, 1998
Term endedAugust 2, 2013
Application numberEP 93306106
Classification (CPC)G11B5/714 +2 more

Timeline

Timeline From EPO dates

1994199619982000200220042006200820102012Application filedAug 2, 1993PublishedFeb 9, 1994Patent grantedOct 14, 1998Term endedAug 2, 2013

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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