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Expired European patentEurope

Process and device for preventing malfunction of a dental evacuation system

EP 0516191 B1 · Applicant: PREGENZER, Bruno

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Overview

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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 August 23, 1989 and granted October 8, 1997. A European patent lasts at most 20 years from filing, so its term ended August 23, 2009.
  • 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 February 23, 2015.
  • 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.
FiledAugust 23, 1989
PublishedDecember 2, 1992
GrantedOctober 8, 1997
Term endedAugust 23, 2009
Application numberEP 92113515
Classification (CPC)A61C17/135

Timeline

Timeline From EPO dates

1990199219941996199820002002200420062008Application filedAug 23, 1989PublishedDec 2, 1992Patent grantedOct 8, 1997Term endedAug 23, 2009

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

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