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Expired European patentEurope

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EP 0246509 B1 · Applicant: Weyel KG

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Overview

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

Read the whole patent

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 May 8, 1987 and granted August 16, 1989. A European patent lasts at most 20 years from filing, so its term ended May 8, 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 November 8, 2012.
  • 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.
FiledMay 8, 1987
PublishedNovember 25, 1987
GrantedAugust 16, 1989
Term endedMay 8, 2007
Application numberEP 87106674
Classification (CPC)G09F7/18 +1 more

Timeline

Timeline From EPO dates

1988199019921994199619982000200220042006Application filedMay 8, 1987PublishedNov 25, 1987Patent grantedAug 16, 1989Term endedMay 8, 2007

Sources & verification