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Expired European patentEurope

A device for controlling liquid dripping

EP 0272467 B1 · Applicant: KAWASUMI LABORATORIES, INC.

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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 23, 1987 and granted January 22, 1992. A European patent lasts at most 20 years from filing, so its term ended November 23, 2007.
  • 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 23, 2013.
  • 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 23, 1987
PublishedJune 29, 1988
GrantedJanuary 22, 1992
Term endedNovember 23, 2007
Application numberEP 87117239
Classification (CPC)A61M5/1689

Timeline

Timeline From EPO dates

1988199019921994199619982000200220042006Application filedNov 23, 1987PublishedJune 29, 1988Patent grantedJan 22, 1992Term endedNov 23, 2007

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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