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Expired European patentEurope

Metalorganic vapor phase epitaxial growth of group II-VI semiconductor materials

EP 0240844 B1 · Applicant: AMERICAN CYANAMID COMPANY

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Overview

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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 25, 1987 and granted September 18, 1991. A European patent lasts at most 20 years from filing, so its term ended March 25, 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 September 25, 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.
FiledMarch 25, 1987
PublishedOctober 14, 1987
GrantedSeptember 18, 1991
Term endedMarch 25, 2007
Application numberEP 87104410
Classification (CPC)C30B25/02 +1 more

Timeline

Timeline From EPO dates

1988199019921994199619982000200220042006Application filedMarch 25, 1987PublishedOct 14, 1987Patent grantedSep 18, 1991Term endedMarch 25, 2007

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