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Expired European patentEurope

Bootstrap power regulator for systems such as analog to digital converters

EP 0145313 B1 · Applicant: JOHN FLUKE MFG. CO., INC.

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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 13, 1984 and granted December 27, 1989. A European patent lasts at most 20 years from filing, so its term ended November 13, 2004.
  • 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 13, 2010.
  • 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 13, 1984
PublishedJune 19, 1985
GrantedDecember 27, 1989
Term endedNovember 13, 2004
Application numberEP 84307857
Classification (CPC)H03F3/45479

Timeline

Timeline From EPO dates

1985198719891991199319951997199920012003Application filedNov 13, 1984PublishedJune 19, 1985Patent grantedDec 27, 1989Term endedNov 13, 2004

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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