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Expired European patentEurope

Charge biased mem resonator

EP 1831996 B1 · Applicant: Koninklijke Philips Electronics N.V.

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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 21, 2005 and granted May 29, 2013. A European patent lasts at most 20 years from filing, so its term ended December 21, 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.
FiledDecember 21, 2005
PublishedSeptember 12, 2007
GrantedMay 29, 2013
Term endedDecember 21, 2025
Application numberEP 05826750
Classification (CPC)H03H9/2405 +2 more

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedDec 21, 2005PublishedSep 12, 2007Patent grantedMay 29, 2013Term endedDec 21, 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.