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Expired European patentEurope

Band-gap reference current source with compensation for saturating current spread of bipolar transistor

EP 0656575 B1 · Applicant: 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 November 28, 1994 and granted July 8, 1998. A European patent lasts at most 20 years from filing, so its term ended November 28, 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 May 28, 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.
FiledNovember 28, 1994
PublishedJune 7, 1995
GrantedJuly 8, 1998
Term endedNovember 28, 2014
Application numberEP 94203440
Classification (CPC)G05F3/30

Timeline

Timeline From EPO dates

1995199719992001200320052007200920112013Application filedNov 28, 1994PublishedJune 7, 1995Patent grantedJuly 8, 1998Term endedNov 28, 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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