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Expired European patentEurope

Process for quantitative determination of substrate treated with oxidase

EP 0100217 B1 · Applicant: WAKO PURE CHEMICAL INDUSTRIES, LTD.

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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 July 22, 1983 and granted October 7, 1987. A European patent lasts at most 20 years from filing, so its term ended July 22, 2003.
  • 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 January 22, 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.
FiledJuly 22, 1983
PublishedFebruary 8, 1984
GrantedOctober 7, 1987
Term endedJuly 22, 2003
Application numberEP 83304262
Classification (CPC)C12Q1/62 +2 more

Timeline

Timeline From EPO dates

1984198619881990199219941996199820002002Application filedJuly 22, 1983PublishedFeb 8, 1984Patent grantedOct 7, 1987Term endedJuly 22, 2003

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