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Expired European patentEurope

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EP 0540907 B1 · Applicant: Osaka Sanso Kogyo 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.

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Why it's free to use

  • Filed July 29, 1988 and granted April 16, 1997. A European patent lasts at most 20 years from filing, so its term ended July 29, 2008.
  • 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 29, 2014.
  • 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 29, 1988
PublishedMay 12, 1993
GrantedApril 16, 1997
Term endedJuly 29, 2008
Application numberEP 92117486
Classification (CPC)G01N33/0006 +1 more

Timeline

Timeline From EPO dates

1989199119931995199719992001200320052007Application filedJuly 29, 1988PublishedMay 12, 1993Patent grantedApril 16, 1997Term endedJuly 29, 2008

Sources & verification

Official EPO records

Full published documentClaims, description and drawings as a PDF.EPOEuropean Patent RegisterProcedure, status, file inspection and legal events.EPOLinked open EP data recordThe bibliographic record this page is built from.EPO

Cross-check elsewhere

Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.comEspacenetNational family members and their legal status.European Patent Office

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.