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Expired European patentEurope

Process for manufacturing a sintered structural ceramic part of aluminum nitride

EP 0950037 B1 · Applicant: ONERA (Office National d'Etudes et de Recherches Aérospatiales)

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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 November 13, 1997 and granted December 19, 2001. A European patent lasts at most 20 years from filing, so its term ended November 13, 2017.
  • 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 May 13, 2023.
  • 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.
FiledNovember 13, 1997
PublishedOctober 20, 1999
GrantedDecember 19, 2001
Term endedNovember 13, 2017
Application numberEP 97945921
Classification (CPC)C04B37/006 +2 more

Timeline

Timeline From EPO dates

1998200020022004200620082010201220142016Application filedNov 13, 1997PublishedOct 20, 1999Patent grantedDec 19, 2001Term endedNov 13, 2017

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

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