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Expired European patentEurope

Rotary piston engine

EP 1272738 B1 · Applicant: Diro Konstruktions GmbH & Co. KG

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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 January 11, 2001 and granted July 14, 2004. A European patent lasts at most 20 years from filing, so its term ended January 11, 2021.
  • 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 July 11, 2026.
  • 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.
FiledJanuary 11, 2001
PublishedJanuary 8, 2003
GrantedJuly 14, 2004
Term endedJanuary 11, 2021
Application numberEP 01911339
Classification (CPC)F01C3/025

Timeline

Timeline From EPO dates

2002200420062008201020122014201620182020Application filedJan 11, 2001PublishedJan 8, 2003Patent grantedJuly 14, 2004Term endedJan 11, 2021

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.