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EP 0446983 B1 · Applicant: ALPROKON PROMOTIE EN ONTWIKKELING B.V.

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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 February 28, 1991 and granted December 29, 1993. A European patent lasts at most 20 years from filing, so its term ended February 28, 2011.
  • 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 August 28, 2016.
  • 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.
FiledFebruary 28, 1991
PublishedSeptember 18, 1991
GrantedDecember 29, 1993
Term endedFebruary 28, 2011
Application numberEP 91200432
Classification (CPC)E04D13/15

Timeline

Timeline From EPO dates

1992199419961998200020022004200620082010Application filedFeb 28, 1991PublishedSep 18, 1991Patent grantedDec 29, 1993Term endedFeb 28, 2011

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