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Expired European patentEurope

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EP 0125896 B1 · Applicant: JAMES WALKER & COMPANY 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 May 10, 1984 and granted November 23, 1988. A European patent lasts at most 20 years from filing, so its term ended May 10, 2004.
  • 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 10, 2009.
  • 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 10, 1984
PublishedNovember 21, 1984
GrantedNovember 23, 1988
Term endedMay 10, 2004
Application numberEP 84303180
Classification (CPC)F16J15/46

Timeline

Timeline From EPO dates

1985198719891991199319951997199920012003Application filedMay 10, 1984PublishedNov 21, 1984Patent grantedNov 23, 1988Term endedMay 10, 2004

Sources & verification