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Expired European patentEurope

D/a converter with symmetrical differential switching circuit

EP 0713617 B1 · Applicant: ANALOG DEVICES, INCORPORATED

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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 12, 1994 and granted November 29, 2000. A European patent lasts at most 20 years from filing, so its term ended August 12, 2014.
  • 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 12, 2020.
  • 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 12, 1994
PublishedMay 29, 1996
GrantedNovember 29, 2000
Term endedAugust 12, 2014
Application numberEP 94927168
Classification (CPC)H03M1/745

Timeline

Timeline From EPO dates

1995199719992001200320052007200920112013Application filedAug 12, 1994PublishedMay 29, 1996Patent grantedNov 29, 2000Term endedAug 12, 2014

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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