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Expired European patentEurope

Zircomium nitride coated article and method for making same

EP 0264654 B1 · Applicant: UNION CARBIDE CORPORATION

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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 September 24, 1987 and granted May 23, 1990. A European patent lasts at most 20 years from filing, so its term ended September 24, 2007.
  • 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 March 24, 2013.
  • 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.
FiledSeptember 24, 1987
PublishedApril 27, 1988
GrantedMay 23, 1990
Term endedSeptember 24, 2007
Application numberEP 87113989
Classification (CPC)C23C14/0641

Timeline

Timeline From EPO dates

1988199019921994199619982000200220042006Application filedSep 24, 1987PublishedApril 27, 1988Patent grantedMay 23, 1990Term endedSep 24, 2007

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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