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Expired European patentEurope

Azo disperse dye mixtures

EP 1188799 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 8, 2001 and granted November 14, 2012. A European patent lasts at most 20 years from filing, so its term ended September 8, 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 8, 2001
PublishedMarch 20, 2002
GrantedNovember 14, 2012
Term endedSeptember 8, 2021
Application numberEP 01121526
Classification (CPC)C09B67/0051

Timeline

Timeline From EPO dates

2002200420062008201020122014201620182020Application filedSep 8, 2001PublishedMarch 20, 2002Patent grantedNov 14, 2012Term endedSep 8, 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

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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