Patent Yard Sign in
Expired European patentEurope

AC current detecting device for inverter apparatus and AC current detecting method therefor

EP 1280264 B1 · Applicant: Hitachi, Ltd.

EPO PDF

Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

Read the whole patent

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.

Google PatentsEPO PDF

Why it's free to use

  • Filed March 7, 2002 and granted October 27, 2004. A European patent lasts at most 20 years from filing, so its term ended March 7, 2022.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • 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 7, 2002
PublishedJanuary 29, 2003
GrantedOctober 27, 2004
Term endedMarch 7, 2022
Application numberEP 02251621
Classification (CPC)H02M7/5387

Timeline

Timeline From EPO dates

2003200520072009201120132015201720192021Application filedMarch 7, 2002PublishedJan 29, 2003Patent grantedOct 27, 2004Term endedMarch 7, 2022

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.