Patent Yard Sign in
Expired European patentEurope

Electronic switching device operating without contact

EP 0298331 B1 · Applicant: i f m electronic 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 June 25, 1988 and granted January 26, 1994. A European patent lasts at most 20 years from filing, so its term ended June 25, 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 December 25, 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.
FiledJune 25, 1988
PublishedJanuary 11, 1989
GrantedJanuary 26, 1994
Term endedJune 25, 2008
Application numberEP 88110186
Classification (CPC)H03K17/945

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedJune 25, 1988PublishedJan 11, 1989Patent grantedJan 26, 1994Term endedJune 25, 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.