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Expired European patentEurope

Watersoluble monoazo dyestuffs, process for their preparation and their use

EP 1191069 B1 · Applicant: DyStar Textilfarben GmbH & Co. Deutschland KG

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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 September 15, 2001 and granted March 26, 2008. A European patent lasts at most 20 years from filing, so its term ended September 15, 2021.
  • 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.
FiledSeptember 15, 2001
PublishedMarch 27, 2002
GrantedMarch 26, 2008
Term endedSeptember 15, 2021
Application numberEP 01122159
Classification (CPC)C09B29/0003 +1 more

Timeline

Timeline From EPO dates

2002200420062008201020122014201620182020Application filedSep 15, 2001PublishedMarch 27, 2002Patent grantedMarch 26, 2008Term endedSep 15, 2021

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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