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Expired European patentEurope

Acicular electroconductive tin oxide fine particles and process for producing same

EP 0719730 B1 · Applicant: ISHIHARA SANGYO KAISHA, LTD.

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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 December 18, 1995 and granted July 28, 1999. A European patent lasts at most 20 years from filing, so its term ended December 18, 2015.
  • 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 June 18, 2021.
  • 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.
FiledDecember 18, 1995
PublishedJuly 3, 1996
GrantedJuly 28, 1999
Term endedDecember 18, 2015
Application numberEP 95119987
Classification (CPC)C01G19/02 +1 more

Timeline

Timeline From EPO dates

1996199820002002200420062008201020122014Application filedDec 18, 1995PublishedJuly 3, 1996Patent grantedJuly 28, 1999Term endedDec 18, 2015

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

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