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Expired European patentEurope

Method of making ceramic silicon carbide articles

EP 0662462 B1 · Applicant: Hoechst CeramTec Aktiengesellschaft

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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 January 3, 1995 and granted May 12, 1999. A European patent lasts at most 20 years from filing, so its term ended January 3, 2015.
  • 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 July 3, 2020.
  • 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.
FiledJanuary 3, 1995
PublishedJuly 12, 1995
GrantedMay 12, 1999
Term endedJanuary 3, 2015
Application numberEP 95100048
Classification (CPC)C04B35/573

Timeline

Timeline From EPO dates

1996199820002002200420062008201020122014Application filedJan 3, 1995PublishedJuly 12, 1995Patent grantedMay 12, 1999Term endedJan 3, 2015

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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