Patent Yard Sign in
Expired European patentEurope

Equalization of the distribution of voltage at the switch-off of a series circuit of gate-controlled semiconductors

EP 0288422 B1 · Applicant: Licentia Patent-Verwaltungs-GmbH

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 April 18, 1988 and granted June 16, 1993. A European patent lasts at most 20 years from filing, so its term ended April 18, 2008.
  • 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 October 18, 2013.
  • 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.
FiledApril 18, 1988
PublishedOctober 26, 1988
GrantedJune 16, 1993
Term endedApril 18, 2008
Application numberEP 88730088
Classification (CPC)H03K17/105

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedApril 18, 1988PublishedOct 26, 1988Patent grantedJune 16, 1993Term endedApril 18, 2008

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.