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Expired European patentEurope

Process and device improving the sliding of alternating pistons of thermal engines

EP 0341285 B1 · Applicant: RANNOU, Georges

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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 November 17, 1988 and granted June 23, 1993. A European patent lasts at most 20 years from filing, so its term ended November 17, 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 May 17, 2014.
  • 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.
FiledNovember 17, 1988
PublishedNovember 15, 1989
GrantedJune 23, 1993
Term endedNovember 17, 2008
Application numberEP 88910062
Classification (CPC)F16J9/08 +1 more

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedNov 17, 1988PublishedNov 15, 1989Patent grantedJune 23, 1993Term endedNov 17, 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

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