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Determination of nonionic surfactants in aqueous alkaline solutions

EP 1051614 A1 · Applicant: Clariant International 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 January 15, 1999 and never granted as a European patent. Had it been granted, its 20-year term would have ended January 15, 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 July 15, 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.
FiledJanuary 15, 1999
PublishedNovember 15, 2000
GrantedNever granted
Term endedJanuary 15, 2019
Application numberEP 99906128
Classification (CPC)G01N31/22

Timeline

Timeline From EPO dates

2000200220042006200820102012201420162018Application filedJan 15, 1999PublishedNov 15, 2000Term endedJan 15, 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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