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Expired European patentEurope

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EP 0051801 B1 · Applicant: ALFRED TEVES 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 October 28, 1981 and granted April 22, 1987. A European patent lasts at most 20 years from filing, so its term ended October 28, 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 April 28, 2007.
  • 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.
FiledOctober 28, 1981
PublishedMay 19, 1982
GrantedApril 22, 1987
Term endedOctober 28, 2001
Application numberEP 81109096
Classification (CPC)B60T8/1764 +2 more

Timeline

Timeline From EPO dates

1982198419861988199019921994199619982000Application filedOct 28, 1981PublishedMay 19, 1982Patent grantedApril 22, 1987Term endedOct 28, 2001

Sources & verification