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Expired European patentEurope

Multi-cylinder internal combustion engine

EP 0232467 B1 · Applicant: Dr.Ing.h.c. F. Porsche Aktiengesellschaft

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Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

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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 October 18, 1986 and granted July 18, 1990. A European patent lasts at most 20 years from filing, so its term ended October 18, 2006.
  • 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 18, 2012.
  • 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 18, 1986
PublishedAugust 19, 1987
GrantedJuly 18, 1990
Term endedOctober 18, 2006
Application numberEP 86114449
Classification (CPC)F02F1/108 +2 more

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedOct 18, 1986PublishedAug 19, 1987Patent grantedJuly 18, 1990Term endedOct 18, 2006

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.