Expired European patentEurope
Process and apparatus for continuously controlling the undercooling of the solidification front of a single crystal during its development, and use in its growth control
EP 0246940 B1 · Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE
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 April 23, 1987 and granted July 24, 1991. A European patent lasts at most 20 years from filing, so its term ended April 23, 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 23, 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 23, 1987
PublishedNovember 25, 1987
GrantedJuly 24, 1991
Term endedApril 23, 2007
Application numberEP 87400938
Classification (CPC)C30B11/006 +1 more
Timeline
Timeline From EPO dates
Sources & verification
Official EPO records
Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.