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Expired European patentEurope

Tube connection structure

EP 1840438 B1 · Applicant: Tokyo Metropolitan Government

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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 24, 2005 and granted December 28, 2011. A European patent lasts at most 20 years from filing, so its term ended November 24, 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.
FiledNovember 24, 2005
PublishedOctober 3, 2007
GrantedDecember 28, 2011
Term endedNovember 24, 2025
Application numberEP 05809569
Classification (CPC)F16L27/12 +1 more

Timeline

Timeline From EPO dates

2006200820102012201420162018202020222024Application filedNov 24, 2005PublishedOct 3, 2007Patent grantedDec 28, 2011Term endedNov 24, 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.