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Expired European patentEurope

Systems and methods for producing standby uninterruptible power for ac loads using rectified ac and battery

EP 1078436 B1 · Applicant: Powerware 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 March 16, 1999 and granted September 18, 2002. A European patent lasts at most 20 years from filing, so its term ended March 16, 2019.
  • 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 September 16, 2024.
  • 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.
FiledMarch 16, 1999
PublishedFebruary 28, 2001
GrantedSeptember 18, 2002
Term endedMarch 16, 2019
Application numberEP 99911399
Classification (CPC)H02J9/061

Timeline

Timeline From EPO dates

2000200220042006200820102012201420162018Application filedMarch 16, 1999PublishedFeb 28, 2001Patent grantedSep 18, 2002Term endedMarch 16, 2019

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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