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Expired European patentEurope

Coil and bobbin for coil

EP 1722381 B1 · Applicant: TDK Corporation

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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 January 27, 2005 and granted July 26, 2017. A European patent lasts at most 20 years from filing, so its term ended January 27, 2025.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • 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.
FiledJanuary 27, 2005
PublishedNovember 15, 2006
GrantedJuly 26, 2017
Term endedJanuary 27, 2025
Application numberEP 05704161
Classification (CPC)H01F27/325

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedJan 27, 2005PublishedNov 15, 2006Patent grantedJuly 26, 2017Term endedJan 27, 2025

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.