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Expired European patentEurope

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EP 0038093 B1 · Applicant: Etablissements Auguste LAMY & FILS

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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 March 23, 1981 and granted February 6, 1985. A European patent lasts at most 20 years from filing, so its term ended March 23, 2001.
  • 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 September 23, 2006.
  • 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.
FiledMarch 23, 1981
PublishedOctober 21, 1981
GrantedFebruary 6, 1985
Term endedMarch 23, 2001
Application numberEP 81200317
Classification (CPC)G02C1/10 +2 more

Timeline

Timeline From EPO dates

1982198419861988199019921994199619982000Application filedMarch 23, 1981PublishedOct 21, 1981Patent grantedFeb 6, 1985Term endedMarch 23, 2001

Sources & verification