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Expired European patentEurope

Device and method for detecting leaks in the combustion system of a water-cooled internal-combustion engine

EP 0122975 B1 · Applicant: Deissler, Hubert

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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 December 22, 1983 and granted May 6, 1987. A European patent lasts at most 20 years from filing, so its term ended December 22, 2003.
  • 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 June 22, 2009.
  • 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.
FiledDecember 22, 1983
PublishedOctober 31, 1984
GrantedMay 6, 1987
Term endedDecember 22, 2003
Application numberEP 83112975
Classification (CPC)F01P11/14 +1 more

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedDec 22, 1983PublishedOct 31, 1984Patent grantedMay 6, 1987Term endedDec 22, 2003

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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