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Expired European patentEurope

Process for simultaneous preparation of nanocrystalline titanium dioxide and hydrazine monohydrochloride

EP 1685068 B1 · Applicant: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH

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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 20, 2003 and granted March 18, 2009. A European patent lasts at most 20 years from filing, so its term ended November 20, 2023.
  • Supplementary protection certificates extend only medicine and crop-protection patents, and it isn't classified as either.
  • 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 20, 2003
PublishedAugust 2, 2006
GrantedMarch 18, 2009
Term endedNovember 20, 2023
Application numberEP 03772469
Classification (CPC)C01B21/16 +2 more

Timeline

Timeline From EPO dates

2004200620082010201220142016201820202022Application filedNov 20, 2003PublishedAug 2, 2006Patent grantedMarch 18, 2009Term endedNov 20, 2023

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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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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