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Expired European patentEurope

Silica-alumina composite sol, processes for producing the same, and recording medium

EP 1010666 B1 · Applicant: ASAHI GLASS COMPANY LTD.

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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 June 10, 1999 and granted November 4, 2009. A European patent lasts at most 20 years from filing, so its term ended June 10, 2019.
  • 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 December 10, 2024.
  • 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.
FiledJune 10, 1999
PublishedJune 21, 2000
GrantedNovember 4, 2009
Term endedJune 10, 2019
Application numberEP 99925295
Classification (CPC)C01F7/34 +2 more

Timeline

Timeline From EPO dates

2000200220042006200820102012201420162018Application filedJune 10, 1999PublishedJune 21, 2000Patent grantedNov 4, 2009Term endedJune 10, 2019

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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