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Expired European patentEurope

Semiconductor apparatus, power converter and automobile

EP 1174992 B1 · Applicant: Hitachi, Ltd.

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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 February 27, 2001 and granted April 26, 2006. A European patent lasts at most 20 years from filing, so its term ended February 27, 2021.
  • 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 August 27, 2026.
  • 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.
FiledFebruary 27, 2001
PublishedJanuary 23, 2002
GrantedApril 26, 2006
Term endedFebruary 27, 2021
Application numberEP 01104445
Classification (CPC)H02M7/003

Timeline

Timeline From EPO dates

2002200420062008201020122014201620182020Application filedFeb 27, 2001PublishedJan 23, 2002Patent grantedApril 26, 2006Term endedFeb 27, 2021

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.