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Expired European patentEurope

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EP 0547792 B1 · Applicant: PRESSED DRUMS LIMITED

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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 November 26, 1992 and granted January 17, 1996. A European patent lasts at most 20 years from filing, so its term ended November 26, 2012.
  • 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 26, 2018.
  • 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 26, 1992
PublishedJune 23, 1993
GrantedJanuary 17, 1996
Term endedNovember 26, 2012
Application numberEP 92310837
Classification (CPC)E04G3/30

Timeline

Timeline From EPO dates

1993199519971999200120032005200720092011Application filedNov 26, 1992PublishedJune 23, 1993Patent grantedJan 17, 1996Term endedNov 26, 2012

Sources & verification