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Expired European patentEurope

Process for the production of an indium-tin oxide target

EP 0678591 B1 · Applicant: LEYBOLD MATERIALS GmbH

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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 November 22, 1994 and granted June 3, 1998. A European patent lasts at most 20 years from filing, so its term ended November 22, 2014.
  • 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 22, 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.
FiledNovember 22, 1994
PublishedOctober 25, 1995
GrantedJune 3, 1998
Term endedNovember 22, 2014
Application numberEP 94118341
Classification (CPC)C04B35/457 +1 more

Timeline

Timeline From EPO dates

1995199719992001200320052007200920112013Application filedNov 22, 1994PublishedOct 25, 1995Patent grantedJune 3, 1998Term endedNov 22, 2014

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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