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Expired European patentEurope

Process for preparing aluminum nitride

EP 0887308 B1 · Applicant: Toyota Jidosha Kabushiki Kaisha

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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 December 26, 1996 and granted September 27, 2006. A European patent lasts at most 20 years from filing, so its term ended December 26, 2016.
  • 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 June 26, 2022.
  • 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.
FiledDecember 26, 1996
PublishedDecember 30, 1998
GrantedSeptember 27, 2006
Term endedDecember 26, 2016
Application numberEP 96942671
Classification (CPC)C01B21/0722

Timeline

Timeline From EPO dates

1997199920012003200520072009201120132015Application filedDec 26, 1996PublishedDec 30, 1998Patent grantedSep 27, 2006Term endedDec 26, 2016

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.