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Expired European patentEurope

Sputtered films for metal alloy oxides

EP 0343695 B1 · Applicant: PPG INDUSTRIES, INC.

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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 24, 1985 and granted February 3, 1993. A European patent lasts at most 20 years from filing, so its term ended October 24, 2005.
  • 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 24, 2011.
  • 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 24, 1985
PublishedNovember 29, 1989
GrantedFebruary 3, 1993
Term endedOctober 24, 2005
Application numberEP 89113298
Classification (CPC)C03C17/36 +2 more

Timeline

Timeline From EPO dates

1986198819901992199419961998200020022004Application filedOct 24, 1985PublishedNov 29, 1989Patent grantedFeb 3, 1993Term endedOct 24, 2005

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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