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Expired European patentEurope

Diamond synthetic method

EP 0578232 B1 · Applicant: SUMITOMO ELECTRIC INDUSTRIES, LIMITED

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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 July 7, 1993 and granted January 24, 1996. A European patent lasts at most 20 years from filing, so its term ended July 7, 2013.
  • 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 January 7, 2019.
  • 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.
FiledJuly 7, 1993
PublishedJanuary 12, 1994
GrantedJanuary 24, 1996
Term endedJuly 7, 2013
Application numberEP 93110885
Classification (CPC)C23C16/047 +2 more

Timeline

Timeline From EPO dates

1994199619982000200220042006200820102012Application filedJuly 7, 1993PublishedJan 12, 1994Patent grantedJan 24, 1996Term endedJuly 7, 2013

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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