Patent Yard Sign in
Expired European patentEurope

Indicator for displaying time-lapses and/or the onset of changes of state

EP 0500580 B1 · Applicant: BADISCHE TABAKMANUFACTUR ROTH-HÄNDLE 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 October 23, 1990 and granted February 2, 1994. A European patent lasts at most 20 years from filing, so its term ended October 23, 2010.
  • 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 April 23, 2016.
  • 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.
FiledOctober 23, 1990
PublishedSeptember 2, 1992
GrantedFebruary 2, 1994
Term endedOctober 23, 2010
Application numberEP 90915757
Classification (CPC)G07C1/00 +2 more

Timeline

Timeline From EPO dates

1991199319951997199920012003200520072009Application filedOct 23, 1990PublishedSep 2, 1992Patent grantedFeb 2, 1994Term endedOct 23, 2010

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.