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Expired European patentEurope

Gallium arsenide single crystals, and process for the preparation thereof

EP 0206541 B1 · Applicant: CONSIGLIO NAZIONALE DELLE RICERCHE

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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.

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Why it's free to use

  • Filed May 27, 1986 and granted January 22, 1992. A European patent lasts at most 20 years from filing, so its term ended May 27, 2006.
  • 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 November 27, 2011.
  • 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.
FiledMay 27, 1986
PublishedDecember 30, 1986
GrantedJanuary 22, 1992
Term endedMay 27, 2006
Application numberEP 86304008
Classification (CPC)C30B15/00 +1 more

Timeline

Timeline From EPO dates

1987198919911993199519971999200120032005Application filedMay 27, 1986PublishedDec 30, 1986Patent grantedJan 22, 1992Term endedMay 27, 2006

Sources & verification

Official EPO records

Full published documentClaims, description and drawings as a PDF.EPOEuropean Patent RegisterProcedure, status, file inspection and legal events.EPOLinked open EP data recordThe bibliographic record this page is built from.EPO

Cross-check elsewhere

Google PatentsFull text, worldwide family, citing patents and legal events.patents.google.comEspacenetNational family members and their legal status.European Patent Office

Everything on this page comes from the EPO record linked above. EPO data used under CC BY 4.0.