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Expired European patentEurope

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EP 0056927 B1 · Applicant: FIDES TREUHAND GmbH

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Overview

The published document from the EPO: abstract, claims, description and drawings. Open it full size

Read the whole patent

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 January 27, 1981 and granted May 29, 1985. A European patent lasts at most 20 years from filing, so its term ended January 27, 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 July 27, 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.
FiledJanuary 27, 1981
PublishedAugust 4, 1982
GrantedMay 29, 1985
Term endedJanuary 27, 2001
Application numberEP 81810022
Classification (CPC)F02G1/04 +2 more

Timeline

Timeline From EPO dates

1982198419861988199019921994199619982000Application filedJan 27, 1981PublishedAug 4, 1982Patent grantedMay 29, 1985Term endedJan 27, 2001

Sources & verification