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Expired European patentEurope

Fuel switching for dual fuel engine

EP 1669578 B1 · Applicant: Mazda Motor Corporation

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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 27, 2005 and granted September 1, 2010. A European patent lasts at most 20 years from filing, so its term ended October 27, 2025.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • 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 27, 2005
PublishedJune 14, 2006
GrantedSeptember 1, 2010
Term endedOctober 27, 2025
Application numberEP 05023555
Classification (CPC)F02D41/0025 +2 more

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedOct 27, 2005PublishedJune 14, 2006Patent grantedSep 1, 2010Term endedOct 27, 2025

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.