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Expired European patentEurope

Silicon carbide sintered body especially for sliding rings and sliding ring containing such a sintered body

EP 0486336 B1 · Applicant: CERAMIQUES & COMPOSITES SA.

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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 October 14, 1991 and granted August 9, 1995. A European patent lasts at most 20 years from filing, so its term ended October 14, 2011.
  • 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 April 14, 2017.
  • 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.
FiledOctober 14, 1991
PublishedMay 20, 1992
GrantedAugust 9, 1995
Term endedOctober 14, 2011
Application numberEP 91402736
Classification (CPC)C04B38/0051 +2 more

Timeline

Timeline From EPO dates

1992199419961998200020022004200620082010Application filedOct 14, 1991PublishedMay 20, 1992Patent grantedAug 9, 1995Term endedOct 14, 2011

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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