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Expired European patentEurope

Intermetallic compounds, hydrides thereof and process for preparing same

EP 0243816 B1 · Applicant: Studiengesellschaft Kohle mbH

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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 April 16, 1987 and granted August 5, 1992. A European patent lasts at most 20 years from filing, so its term ended April 16, 2007.
  • 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 October 16, 2012.
  • 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.
FiledApril 16, 1987
PublishedNovember 4, 1987
GrantedAugust 5, 1992
Term endedApril 16, 2007
Application numberEP 87105669
Classification (CPC)C01B35/00 +2 more

Timeline

Timeline From EPO dates

1988199019921994199619982000200220042006Application filedApril 16, 1987PublishedNov 4, 1987Patent grantedAug 5, 1992Term endedApril 16, 2007

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