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Expired European patentEurope

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EP 0306786 B1 · Applicant: IWK Regler und Kompensatoren GmbH

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Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

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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.

Why it's free to use

  • Filed August 27, 1988 and granted January 30, 1991. A European patent lasts at most 20 years from filing, so its term ended August 27, 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 February 27, 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.
FiledAugust 27, 1988
PublishedMarch 15, 1989
GrantedJanuary 30, 1991
Term endedAugust 27, 2008
Application numberEP 88114013
Classification (CPC)F16L3/2053 +1 more

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedAug 27, 1988PublishedMarch 15, 1989Patent grantedJan 30, 1991Term endedAug 27, 2008

Sources & verification