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Expired European patentEurope

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EP 0226902 B1 · Applicant: KYOKUTO KAIHATSU KOGYO CO., LTD.

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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 December 4, 1986 and granted March 25, 1992. A European patent lasts at most 20 years from filing, so its term ended December 4, 2006.
  • 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 June 4, 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.
FiledDecember 4, 1986
PublishedJuly 1, 1987
GrantedMarch 25, 1992
Term endedDecember 4, 2006
Application numberEP 86116852
Classification (CPC)B60P1/483

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedDec 4, 1986PublishedJuly 1, 1987Patent grantedMarch 25, 1992Term endedDec 4, 2006

Sources & verification